What is a precision injection molding

What is a precision injection molding

Precision injection molding generally refers to a process that requires high accuracy and surface quality of molded products. Some people also believe that precision injection molding refers to an injection molding process that has a dimensional accuracy of 0.01 to 0.001 mm. With the rapid development of medical, communications, automotive and other industries, people's requirements for the accuracy and height of plastic products are increasing day by day. Traditional plastic molding processes have been difficult to meet the current high standards. At the same time, injection molding is one of the most important plastic molding methods. First, as a result, precision injection molding technology is receiving more and more attention from people. Therefore, precision injection molding technology continues to advance, and new technologies continue to emerge.

Precision injection molding requires that the product not only has high dimensional accuracy, minimal warping deformation, excellent transfer characteristics, but also excellent optical performance, etc., so it has an excellent performance on injection molding machines, injection molds, molding processes, and raw materials. And formula are always special requirements, many factors affect precision injection molding.

What are the factors that affect precision injection molding?

Generally, PS, ABS, AS, PMMA, PC, PPO, PSU can be used to form products with level 3 and 4 accuracies; PA series can be used to form products with level 4 accuracy; and POM, PP, PE, TPE, etc. are not suitable for forming level 4 or higher Precision products.

In addition, due to the low shrinkage and high dimensional stability of inorganic-filled or glass-reinforced plastics, they are often used to form precision products. Process characteristics of precision injection molding are mainly high injection pressure, fast injection speed, and precise temperature control.

(1) High injection pressure the test proves that for different plastic varieties, shapes, and sizes, the pressure required for precision injection molding should be 180-250MPa (the injection pressure used for ordinary injection molding is generally 40-200MPa), in some special cases, the requirements are higher. The highest has reached about 450MPa.

(2) Fast injection speed The size of the injection speed obviously affects the size of the product, and more importantly, it can reduce the dimensional tolerance of the product. In order to improve the accuracy of injection molded parts, especially for the molding of products with complex shapes, variable-speed injection must be developed, that is, the injection speed is changed, and the change rule is determined by the structural shape of the part and the properties of the plastic.

(3) Temperature control must be precise. The temperature has a great influence on the molding quality of the product and is one of the three major process conditions for injection molding. For precision injection molding, there are both temperature problems and temperature control accuracy issues. In the process of precision injection molding, if the temperature is not accurately controlled, the fluidity of the plastic melt and the molding performance and shrinkage of the product will not be stable, so the accuracy of the product cannot be guaranteed.

From this perspective, when precision injection molding is used, the temperature range must be strictly controlled for both the barrel and the nozzle and the injection mold.

For example, during precision injection molding, PID controllers are used for the temperature at the barrel and nozzle, and the temperature range is controlled within 1 ° C. For ordinary injection molding machines, the temperature can reach 20 ° C to 300 ° C. In order to ensure the accuracy of the product during injection molding production, in addition to strictly controlling the temperature of the barrel, nozzle and mold, attention must also be paid to the impact of the ambient temperature on the accuracy of the product after demolding.

The Document And Preparation Before Mold Shippment

The Document And Preparation Before Mold Shippment

As we know, we as plastic injection mold manufacturer should make sure the mold meet customer’s requirement and the quality meet the highest level, At the same time, it is convenient for customers to use.so preparation before mold shippment，checking procedure should be injection moulding company followed as below. make sure all document needed is all packed in the shipping box
1, 2D mold assembly drawing with hard copy
2, 2D part drawing with hard copy
3, all the 2D drawing and 3D part drawing with PC copy(Buring in CD disk)
4, Hot runner drawing if have
5, short shot photos and 2 prototypes   China cycle auto-injection video burn in the CD
6, all the electrodes for mold in case modification in the customer side
7, 1 shorts sample for the last trial
8, 1 copy of injection molding parameter
9, steel certificate for core and cavity
10, the dimension measurement report for the last samples
11, The hardness plastic moulding companies treatment certificate for cor and cavity steel
12, one copy nitriding certificate
13, measurement report for mold steels.

Trade war - China's will to defend its interests is strong

On August 24th the USA announced that it would raise tariffs on some $550 billion of Chinese imports. A spokesman for the ministry of commerce said China was firmly opposed to the move. Such unilateral and bullying trade protectionism and extreme pressure actions run counter to the consensus reached by the heads of state of China and the United States, violate the principles of mutual respect, equality, and mutual benefit, and seriously undermine the multilateral trading system and normal international trade order. China strongly urges the USA not to misjudge the situation, underestimate the determination of the Chinese people and immediately stop its wrong practices, or the USA will bear all the consequences. (see page 04 for related report)

A sharp fall in the USA stock market was imminent, but the scale and intensity of the trade friction were again escalated, regardless of the consequences. The dow jones industrial average plunged more than 600 points on Wednesday as all three major U.S. stock indexes suffered heavy losses due to trade frictions between China and the United States. Earlier, the USA government announced a 10 percent tariff on us $300bn worth of imports from China. U.S. stocks plunged Tuesday after China announced a trade response and the U.S. federal reserve's decision to cut interest rates. After the American stock market crash, some people in the United States are still irrationally and immoderately brandishing the tariff stick again, which shows that the interests of the American people have been regarded as nothing by some politicians.

The USA side has repeatedly raised tariffs on its imports from China. This time, it brazenly announced that it will raise tariffs on all us $550 billion of Chinese imports to the USA. This action violates WTO rules and runs counter to the consensus reached by the two heads of state at the meeting in Argentina and the meeting in Osaka, and seriously infringes upon China's legitimate rights and interests. The further some in the United States go down the slippery slope of bullying for profit, the stronger the backlash will be.

China's will to safeguard its core national interests and the fundamental interests of its people is indestructible. Since may this year, the USA has been escalating trade frictions with China. First, it announced that it would raise the tariff rate on us $200 billion worth of imports from China from 10% to 25%. China recently decided to impose tariffs on about $75 billion of imports from the United States and resume tariffs on cars and plastic parts from the United States. China's countermeasures are precise and effective. They are a response to the USA's unilateralism and trade protectionism, and a strong counterattack to safeguard the interests of the country and its people.

Cooperation is the only correct choice to solve the economic and trade issues between China and the United States. This time, the United States has once again escalated economic and trade frictions and carried out "extreme pressure" in a desperate manner. China strongly opposes us trade bullying and will never make concessions on major issues of principle. For more than a year, the USA's strategic intention to stir up frictions aimed at curbing China's development has been exposed. The so-called "charges" of trade imbalance, forced technology transfer, theft of intellectual property rights and currency manipulation are all the means and excuses used by some us politicians to suppress China. Development is the theme of human civilization. China's development benefits the world. China will never settle differences at the expense of its right to development. In the face of unilateral provocation and escalation of economic and trade frictions by some in the USA China has the ability to resolutely stand by them to the end.

Any extreme pressure is of no use to China. In the face of blackmail by some us politicians, China has the confidence and confidence to resolutely fight back. In the face of complex and severe domestic and international situations, the Chinese economy has got off to a good start this year, with major indicators remaining within a reasonable range. Domestic demand and consumption are growing strongly, innovation is growing rapidly, and macro-control measures are sufficient. All these favorable conditions will ensure that the Chinese economy will continue to forge ahead in spite of wind and rain.

No one wins in a trade war. While countering trade bullying, China will also take into account both domestic and external factors, actively expand opening-up, reduce tariffs on its own initiative, increase imports from other countries, and minimize the impact on China's domestic production and people's living needs. China hopes to build a balanced, inclusive and win-win new economic and trade order between China and the United States. At the same time, China's will to defend its own interests is unshakable. To develop a resilient Chinese economy, we will resolutely uphold and improve the multilateral trading system and work together for mutual benefit and win-win results.

New purchasing strategies in the global economic slowdown

What will happen to the world economy in 2019? A large number of uncertain factors have left the world economy in a fog, and overall, anxiety and optimism coexist. Basically, the global economy will slow down in 2019. Since the beginning of 2018, emerging market economies have suffered from capital outflows, weakening the economies of emerging countries, leading to currency depreciation, rising inflation, and reduced household purchasing power. In the second half of the year, some emerging markets broke out in a currency crisis, geopolitical situations were once again tense, trade frictions escalated, and the risk of a resurgence of the crisis was reshaping new growth patterns through different forms.

In the global economic downturn in 2019, companies have become increasingly difficult to survive. Especially for large and medium-sized enterprises, faced with high labor costs, rental pressures, and rising raw material prices. How to find the right supplier, reduce the procurement cost and ensure the quality?

1, how to reduce procurement costs

Currently, companies are in a highly competitive and rapidly changing environment, and competition has caused the industry's average profit to fall. It is increasingly difficult for companies to establish or maintain sustainable competitive advantage through sales and production; there is still room for development in the procurement field that has been neglected for many years.

Effectively reducing the overall cost of procurement and integrating supplier capabilities through strategic procurement will become an important source for leading companies to continuously reduce procurement costs and enhance their competitive advantage. Therefore, the focus of procurement is on how to choose suppliers, especially the supplier price comparison that pays more attention to the transaction process. Through the competition of suppliers, choose the lower price as the partner. Perhaps the blind pursuit of low prices may lead to a decline in quality. If you cooperate with CN-MOULDING, you don't have to worry about this problem. CN-MOULDING is a typical small and medium-sized enterprise in China. The company is not too large. It is a real manufacturing enterprise. CN-MOULDING can supply customers directly, eliminating all the difference in the middle and reducing costs. The company coordinates Shanghai has geographical advantages, convenient import and export, familiar with business operations, saving time and cost.

2, how to choose low-cost high-quality suppliers

Taking CN-MOULDING as an example, an injection mold company was established in 1997 and has been a small and medium-sized private enterprise for 20 years. Since its establishment, it has been focusing on mold manufacturing and injection molding. Since 2001, it has been engaged in the foreign trade business. It has a large customer base and recognition in Europe and America. With its exquisite technology and rich experience, it has been provided to customers in more than ten countries and regions. solution:
1. Help customers to properly adjust the wall thickness of the product and find the best balance between product quality and production cost.
2, predicting the appearance of weld defects, gas marks, trapped gas, and other defects,
3, predict and control on the mold. Predict product distortion,
4, Help customers to improve the product assembly structure, the front design to avoid deformation.
5, rationally arrange the glue and cooling system to achieve the best process and the most economical investment.
6, to provide optimized production process parameters to help customers solve the problem of product injection production.

The following mold is produced by CN-MOULDING for American customers. It is bulky, thin wall, complex in structure, high in precision, and more difficult to demold the gas roof unit. At that time, CN-MOULDING was not the first choice partner of customers, but more inclined to have large companies on a large scale. In the eyes of customers, big companies mean high quality, high standard, on-time delivery, after-sales service and so on. But ignoring an important issue is the cost of procurement, the quality of the mold is excellent, is the price equally satisfactory?

After the customer revealed that the original mold price was 680,000 RMB, far exceeding their budget. Then the friends around me came to the Shanghai CN-MOULDING company to visit and inspect and offered the quotation on the spot, the total price was 476,000 RMB. They said that it is hard to believe, after all, the price is only 70% of the previous company. It is also doubtful that such a low price can really be achieved? Can you really guarantee the quality of the mold? Is the after-sales service guaranteed? Wait for a series of questions. CN-MOULDING has shown that the larger and more difficult mold cases that have been done before have been shown to customers. Although CN-MOULDING is a small and medium-sized enterprise, it has 20 years of experience in mold manufacturing, and the cooperative companies have many world-class companies. The business has also spread to more than ten countries and regions. Numerous successful cooperation cases have enabled customers to have confidence that CN-MOULDING is a professional, experienced and trustworthy mold manufacturing company.

https://www.youtube.com/watch?v=b3lB0wqWYB0

China's small businesses are fundamental to the vitality of production

There are tens of thousands of small and medium-sized enterprises in China. SMEs are the most dynamic and innovative enterprise groups in China. At the same time, SMEs provide more than 50% of tax revenue, create more than 60% of GDP, and complete more than 70% of invention patents, providing 80%. More than % of urban jobs. SMEs have a pivotal position and have unique advantages. With reasonable prices, rich experience and reliable quality, they are gradually replacing the original large enterprises.

CN-MOULDING is a small and medium-sized enterprise in China that is dynamic, innovative, and professional, and directly supplied to foreign countries. In 2015, we obtained ISO9001:2000 quality certification! With 20 years of integrity, 20 years of experience, and 20 years of quality assurance and after-sales protection.

China is expected to attain the largest market share in the Asia- Pacific industrial gases for the plastic & rubber industry

The report "Industrial Gases for Plastic & Rubber Industry Market by Gas Type (Nitrogen, Carbon Monoxide, Carbon Dioxide, Others), Process (Injection Molding, Extrusion, Foaming, Blow Molding), Storage & Distribution and Transportation, End-Use- Global Forecast to 2020" The industrial gases for the plastic & rubber industry size is estimated to grow from USD 4.89 Billion in 2015 to USD 6.31 Billion by 2020, at a CAGR of 5.24% from 2015 to 2020.
The global industrial gases for the plastic & rubber industry is driven by factors such as strong growth in the beverage, automobile, packaging, construction, and manufacturing sectors among others. Advancements in terms of product innovations and technologies in the market are expected to create strong investment opportunities.
Nitrogen to be the largest market segment of industrial gases for plastic & rubber industry during the forecast period
Nitrogen is projected to contribute to the largest market share during the forecast period. Gases such as carbon dioxide and carbon monoxide have wide applications in the beverage, automobile, packaging, healthcare, and construction sectors. The nitrogen segment is projected to be the fastest-growing market and is expected to grow at the highest CAGR in the next five years. Nitrogen is widely used in industrial and manufacturing applications for the purposes of purging, inerting, sterilizing, and tank blanketing, and flushing.
Injection molding is the fastest-growing segment due to a wide application in the manufacturing process Industrial gases for the plastic and rubber industry, by the process, are segmented
into four processes, namely, injection molding, extrusion, foaming, and blow molding. Injection molding accounted for the largest market share in 2014 and is the most widely used method for processing plastic and rubber into end products. The high versatility and application of injection molding make it the fastest market during the forecast period.
China is expected to attain the largest market share in the Asia- Pacific industrial gases for the plastic & rubber industry
China is expected to have the largest market share and dominate the Asia- Pacific industrial gases for the plastic & rubber industry from 2015 to 2020. China, the largest manufacturer, and supplier of industrial gases for the plastic & rubber industry, exhibits high potential growth opportunities. The key driver for this market is the rapidly growing Chinese industries such as manufacturing, electrical & electronics, automobile, and healthcare industries along with the growing construction market.
Speak to Analyst: www.chinamoldmaker.org
The scope of the report covers detailed information regarding the major factors influencing the growth of the industrial gases for the plastic & rubber industry such as drivers, restraints, challenges, and opportunities. A detailed analysis of the key industry players has been done to provide insights into their business overview, products and services, key strategies, and recent developments associated with the market.

Six stages of injection mold process in China

injection mold  process stages:

Clamping, glue, pressure maintaining and cooling, mould and products.

The above process, again and again, can batch periodically to produce products. Thermosetting plastic and rubber molding including the same process,
but a thermoplastic material barrel temperature is low, the injection pressure is higher, the mould is heated, finished material injection in the mold of the subject to curing or curing process, and then strike off the membrane.
The trend of the current processing technology is developing towards the direction of the high and new technology, these technologies include micro injection molding, high filling compound injection, water injection, mixed with a variety of special injection molding process, foam injection molding,
mold technology, simulation technology, etc.

The temperature control


Injection molding equipment and mold manufacturing in china
1．Nitrogen-treated barrel temperature, injection molding process, the need to control the temperature of the
cylinder temperature, nozzle temperature, and mould temperature, etc. The first two main influence plastic plasticizing temperature and flow,
and then the temperature are mainly influenced by plastic flow and cooling. Each kind of plastic flow with different temperature, the same kind of plastic,
due to different sources or brand, the flow temperature, and decomposition temperature is little different, this is due to the different average
molecular weight and molecular weight distribution, plastic in different type of injection machine of plasticizing process is also different, so choose the cylinder temperature is not
the same.

2. The nozzle temperature, nozzle temperature is usually slightly lower than expected tube maximum temperature, this is to prevent the molten
material in straight through the nozzle may be "salivate phenomenon". Nozzle temperature also cannot too low, otherwise, it will cause the early setting
of melting and the nozzle clogging, or due to early coagulation material into the cavity affect the performance of the products.

3．Pictures of injection molds temperature, mold temperature inner performance and apparent impact on the
quality of products. Mold temperature is determined by the size of the plastic, of crystalline products and structure, performance requirements,
and other process conditions (melt temperature, injection speed, and injection pressure, molding cycle, etc.).
Pressure control

In the process of injection molding pressure including plasticizing and injection pressure, and directly affects the quality of plasticizing and plastic products.

1．plasticizing pressure: (back pressure) adopts a screw injection machine, screw at the top of the molten material in the screw rotating backpressure is called the plasticizing, which is also called backpressure. The size of the
pressure can be found on the overflow valve to adjust the hydraulic system. In injection, the size of the plasticizing pressure is depending upon the
design of the screw, the product quality requirements, and the type of plastic and needs to change, if the situation and the screw rotation speed is
constant, increase plasticizing pressure will strengthen shearing action, which will raise the temperature of the melt, but will reduce the plasticizing efficiency, increase the current and leakage flow, increase the driving power.

In addition, increase plasticizing pressure often can make the melt temperature uniformity, color mixing and discharge gas in the melt. general Injection molding in the operation of the pressure curve, the plasticizing pressure shall be on the premise of guarantee the quality of the product is lower, the better,
the specific values vary with the varieties of the plastic, but usually rarely more than 20 kg/cm2.

2. Injection molding pressure: in the current production, almost all the injection pressure of the injection machine is in piston or screw at the top of the plastic on the pressure (by oil pressure conversion) shall prevail. Injection pressure in injection molding, the role of is, to overcome the flow resistance
of plastic flowing from the cylinder cavity, given the rate of molten material molding and compaction of molten material.

Why injection molds use hot runners?

Why injection molds use hot runners?

After years of development, injection molds have become one of the preferred molds for manufacturing in all walks of life around the world, especially in the developed countries of Europe and The United States, which have advanced in the industry. The most important thing to mention is the use of hot runner technology in injection molds.

1, hot runner technology shortens the injection molding cycle

Because there is no limitation of the cooling time of the main channel and the secondary flow channel, the injection mold can be ejected in time after being solidified. Many thin-walled product molding cycles produced with hot runner molds can be completed in less than 8 seconds.

2, eliminating subsequent processes is conducive to production automation.

After the workpiece is formed by the hot runner mold, it is the finished product, and there is no need to trim the gate and recycle the cold glue lane. Conducive to production automation. Many foreign manufacturers have combined hot runners with automation to significantly increase production efficiency.

3, hot runner technology saves plastic raw materials

In the traditional mold injection, the nozzle material is produced. The high plastic product is not allowed to use the water material (recycled secondary material). Because the reuse of the nozzle material will degrade the structure and performance of the plastic part, the reuse will affect the product quality. There is no cold runner in the hot runner mold, so no nozzle material is produced (fees are required). This is especially significant for applications where the price of plastics is expensive. In fact, the major hot runner manufacturers in the world have experienced rapid development in the world when oil and plastic raw materials are expensive because hot runner technology is reducing materials and reducing materials. Fees, an effective way to save costs.

Expand the application of injection molding process

Many advanced plastic molding processes have been developed based on hot runner technology. Such as PET preforming, multi-color co-injection in the mold, a variety of materials co-injection process

4, reduce the defective products of injection molds and improves product quality

During the hot runner mold forming process, the plastic melt temperature is accurately controlled in the runner system. The plastic can flow into the cavities in a more uniform state, resulting in a consistent quality plastic part. The hot runner molding plastic parts have good quality, low residual stress after demolding, small deformation of plastic parts, and greatly improved surface appearance of injection molded products. Therefore, many high-quality products on the market are produced by hot runner molds. Many familiar plastic parts, such as telephone casings, mobile phone cases, printer cases, computers, and automobiles are produced using hot runner molds.

Design points for injection molding parts

Design points for injection molding parts

In the injection molding process, due to the uneven cooling and uneven shrinkage of the plastic in the cavity and the unreasonable structural design of the injection molded part, it is easy to cause various defects of the product:

Shrinkage, weld marks, pores, deformation, napping, top injury, flash.

  

In order to obtain high-quality injection molding products, we must fully consider the structural processability when designing the products. The following is a combination of the main structural characteristics of the injection molding products to analyze the methods to avoid injection defects. Design points for injection molding parts

1 mold opening direction and parting line

Each injection molding product must first determine its mold opening direction and parting line at the beginning of the design to ensure that the core pulling mechanism is minimized and the influence of the parting line on the appearance is eliminated.

  1.1 After the mold opening direction is determined, the reinforcement ribs, snaps, protrusions, and other structures of the product are designed to be consistent with the mold opening direction as much as possible to avoid the core pulling to reduce the seam line and prolong the life of the mold.

1.2, For example, the direction of the mold opening of the bumper is generally the direction of the body coordinate,. If the mold opening direction is designed to be inconsistent with the χ axis, the angle must be indicated in the product drawing.

  

1.3 After the mold opening direction is determined, the appropriate parting line can be selected to improve the appearance and performance.

2 draft angle

2.1 Appropriate draft angle can avoid product pulling. The smooth surface should have a draft angle greater than 0.5 degrees, a fine grain surface greater than 1 degree, and a rough grain surface greater than 1.5 degrees.

2.2 Appropriate draft angle can avoid product top injury.

  

2.3 Deep cavity structure product design When the outer surface slope is required to be smaller than the inner surface slope, to ensure that the mold core is not biased during injection, to obtain a uniform product wall thickness, and to ensure the material density strength of the product opening.

3 product wall thickness

   3.1 All kinds of plastics have a certain wall thickness range, generally 0.5 ~ 4mm, when the wall thickness exceeds 4mm, it will cause the cooling time is too long, resulting in shrinkage and other issues should consider changing the product structure.

  

3.2 Uneven wall thickness will cause surface shrinkage.

3.3 Uneven wall thickness can cause pores and weld lines.

4 stiffeners

4.1 Reasonable application of ribs can increase product rigidity and reduce deformation.

 4.2 The thickness of the ribs must be less than 1/3 of the wall thickness of the product, otherwise the surface will be reduced.

New purchasing strategies in the global economic slowdown

What will happen to the world economy in 2019? A large number of uncertain factors have left the world economy in a fog, and overall, anxiety and optimism coexist. Basically, the global economy will slow down in 2019. Since the beginning of 2018, emerging market economies have suffered from capital outflows, weakening the economies of emerging countries, leading to currency depreciation, rising inflation, and reduced household purchasing power. In the second half of the year, some emerging markets broke out in a currency crisis, geopolitical situations were once again tense, trade frictions escalated, and the risk of a resurgence of the crisis was reshaping new growth patterns through different forms.

In the global economic downturn in 2019, companies have become increasingly difficult to survive. Especially for large and medium-sized enterprises, faced with high labor costs, rental pressures, and rising raw material prices. How to find the right supplier, reduce the procurement cost and ensure the quality?

1, how to reduce procurement costs

Currently, companies are in a highly competitive and rapidly changing environment, and competition has caused the industry's average profit to fall. It is increasingly difficult for companies to establish or maintain sustainable competitive advantage through sales and production; there is still room for development in the procurement field that has been neglected for many years.

Effectively reducing the overall cost of procurement and integrating supplier capabilities through strategic procurement will become an important source for leading companies to continuously reduce procurement costs and enhance their competitive advantage. Therefore, the focus of procurement is on how to choose suppliers, especially the supplier price comparison that pays more attention to the transaction process. Through the competition of suppliers, choose the lower price as the partner. Perhaps the blind pursuit of low prices may lead to a decline in quality. If you cooperate with CN-MOULDING, you don't have to worry about this problem. CN-MOULDING is a typical small and medium-sized enterprise in China. The company is not too large. It is a real manufacturing enterprise. CN-MOULDING can supply customers directly, eliminating all the difference in the middle and reducing costs. The company coordinates Shanghai has geographical advantages, convenient import and export, familiar with business operations, saving time and cost.

2, how to choose low-cost high-quality suppliers

Taking CN-MOULDING as an example, an injection mold company was established in 1997 and has been a small and medium-sized private enterprise for 20 years. Since its establishment, it has been focusing on mold manufacturing and injection molding. Since 2001, it has been engaged in the foreign trade business. It has a large customer base and recognition in Europe and America. With its exquisite technology and rich experience, it has been provided to customers in more than ten countries and regions. solution:

1. Help customers to properly adjust the wall thickness of the product and find the best balance between product quality and production cost.

2, predicting the appearance of weld defects, gas marks, trapped gas, and other defects,

3, predict and control on the mold. Predict product distortion,

4, Help customers to improve the product assembly structure, the front design to avoid deformation.

5, rationally arrange the glue and cooling system to achieve the best process and the most economical investment.

6, to provide optimized production process parameters to help customers solve the problem of product injection production.

The following mold is produced by CN-MOULDING for American customers. It is bulky, thin wall, complex in structure, high in precision, and more difficult to de-mold the gas roof unit. At that time, CN-MOULDING was not the first choice partner of customers, but more inclined to have large companies on a large scale. In the eyes of customers, big companies mean high quality, high standard, on-time delivery, after-sales service and so on. But ignoring an important issue is the cost of procurement, the quality of the mold is excellent, is the price equally satisfactory?

After the customer revealed that the original mold price was 680,000 RMB, far exceeding their budget. Then the friends around me came to Shanghai CN-MOULDING company to visit and inspect, and offered the quotation on the spot, the total price was 476,000 RMB. They said that it is hard to believe, after all, the price is only 70% of the previous company. It is also doubtful that such a low price can really be achieved? Can you really guarantee the quality of the mold? Is the after-sales service guaranteed? Wait for a series of questions. CN-MOULDING has shown that the larger and more difficult mold cases that have been done before have been shown to customers. Although CN-MOULDING is a small and medium-sized enterprise, it has 20 years of experience in mold manufacturing, and the cooperative companies have many world-class companies. The business has also spread to more than ten countries and regions. Numerous successful cooperation cases have enabled customers to have confidence that CN-MOULDING is a professional, experienced and trustworthy mold manufacturing company.

More production processes 
https://www.youtube.com/watch?v=b3lB0wqWYB0  

China's small businesses are fundamental to the vitality of production

There are tens of thousands of small and medium-sized enterprises in China. SMEs are the most dynamic and innovative enterprise groups in China. At the same time, SMEs provide more than 50% of tax revenue, create more than 60% of GDP, and complete more than 70% of invention patents, providing 80%. More than % of urban jobs. SMEs have a pivotal position and have unique advantages. With reasonable prices, rich experience and reliable quality, they are gradually replacing the original large enterprises.

CN-MOULDING is a small and medium-sized enterprise in China that is dynamic, innovative, and professional, and directly supplied to foreign countries. In 2015, we obtained ISO9001:2000 quality certification! With 20 years of integrity, 20 years of experience, and 20 years of quality assurance and after-sales protection.