Aug 05, 2026Leave a message

Best 10 co-injection Factory in China 2026

Introduction to Co - injection

Co - injection is an advanced plastic processing technology that involves injecting two or more different types of plastics into a mold cavity simultaneously or sequentially. This process allows for the creation of products with multiple layers, each with distinct properties. For example, the outer layer can be designed for aesthetic appeal, such as a high - gloss finish or resistance to scratches, while the inner layer can provide structural strength or insulation. Co - injection technology has found wide applications in various industries, including automotive, consumer goods, packaging, and medical devices.


1. Hengji Mould & Plastic Co., Ltd.

Hengji Mould & Plastic Co., Ltd. is a well - established enterprise in the field of co - injection. With years of experience in the mold and plastic manufacturing industry, it has developed a comprehensive set of production processes and quality control systems. The company is committed to providing high - quality co - injection products to its customers.


Features in Co - injection

  • Precision Molding: Hengji has advanced mold - making technology. Its molds are designed with high precision, ensuring that the co - injection process can achieve accurate layer thickness and distribution. This precision is crucial for products that require specific performance characteristics. For example, in automotive interior parts, the precise control of different plastic layers can enhance the overall appearance and functionality of the parts.
  • Material Compatibility: The company has rich experience in dealing with various types of plastics. It can carefully select and combine different materials according to the customer's requirements, ensuring good adhesion between different layers during the co - injection process. This allows for the production of products with excellent mechanical properties and durability.
  • Customization Ability: Hengji understands that different customers have different needs. It can provide customized co - injection solutions, from product design to production. Whether it is a small - batch production of special - shaped products or large - scale mass production, the company can meet the requirements.


Company Advantages

  • Technical Expertise: The company has a team of highly skilled engineers and technicians who are well - versed in co - injection technology. They continuously research and develop new processes and solutions to improve product quality and production efficiency.
  • Quality Control: Hengji has a strict quality control system. From raw material inspection to finished product testing, every step is carefully monitored. This ensures that the products meet high - quality standards and customer expectations.
  • Customer Service: The company provides excellent customer service. It maintains close communication with customers throughout the production process, ensuring that customers can get timely feedback and support.


Website: https://www.automotive-mold.net/


2. Yizumi Precision Machinery Co., Ltd.

Yizumi is a leading provider of plastic machinery and solutions. It has a wide range of injection molding machines, including those suitable for co - injection processes. The company focuses on continuous innovation and technological advancement to meet the evolving needs of the market.


Features in Co - injection

  • Advanced Machinery Design: Yizumi's co - injection molding machines are designed with state - of - the - art technology. They have precise control systems that can accurately regulate the injection speed, pressure, and volume of different plastics. This allows for the production of high - quality co - injection products with consistent quality.
  • Energy Efficiency: The company is committed to developing energy - efficient machinery. Its co - injection machines use advanced energy - saving technologies, such as servo - drive systems, which can significantly reduce energy consumption during the production process. This not only helps customers save costs but also contributes to environmental protection.
  • Integration with Industry 4.0: Yizumi's co - injection equipment can be integrated with Industry 4.0 concepts. It can connect to the Internet of Things (IoT) for remote monitoring and management. This enables real - time data collection and analysis, which can improve production efficiency and reduce downtime.


Company Advantages

  • Global Presence: Yizumi has a wide global sales and service network. It can provide customers with timely technical support and after - sales service anywhere in the world.
  • R & D Investment: The company invests heavily in research and development. It continuously explores new materials and processes for co - injection, which helps it stay at the forefront of the industry.
  • Industry Reputation: Yizumi has a good reputation in the industry. Its products are widely recognized for their reliability and performance, which gives customers confidence in choosing the company's co - injection solutions.


3. Chen Hsong Holdings Limited

Chen Hsong is a well - known name in the injection molding industry. With a long history of manufacturing injection molding machines, it has accumulated rich experience in co - injection technology.


Features in Co - injection

  • Robust Machine Structure: The co - injection machines produced by Chen Hsong have a strong and stable structure. This ensures that the machines can operate smoothly under high - pressure and high - speed conditions, reducing the risk of machine failure and improving production efficiency.
  • Flexible Injection Modes: The company's machines support multiple injection modes for co - injection, including sequential injection and simultaneous injection. This flexibility allows customers to choose the most suitable mode according to the product requirements, enabling the production of a wide range of co - injection products.
  • User - friendly Interface: The operating interface of Chen Hsong's co - injection machines is designed to be user - friendly. Operators can easily set parameters, monitor the production process, and troubleshoot problems, which reduces the training time for new operators.


Company Advantages

  • Long - standing Experience: With decades of experience in the industry, Chen Hsong has in - depth knowledge of injection molding technology. This experience gives it an edge in developing high - quality co - injection machines.
  • Comprehensive Product Range: The company offers a comprehensive range of injection molding machines, from small - tonnage to large - tonnage machines. This allows customers to choose the most appropriate machine for their co - injection production needs.
  • Good After - sales Service: Chen Hsong provides excellent after - sales service. It has a professional service team that can quickly respond to customer requests and solve problems in a timely manner.


4. Haitian International Holdings Limited

Haitian is one of the largest injection molding machine manufacturers in the world. It has made significant contributions to the development of co - injection technology in China.


Features in Co - injection

  • High - speed Injection: Haitian's co - injection machines are capable of high - speed injection. This is beneficial for mass production, as it can reduce the cycle time and increase production output. For example, in the production of plastic packaging products, high - speed co - injection can meet the large - scale market demand.
  • Multi - Component Injection Capability: The company's machines can handle multi - component co - injection, allowing for the production of more complex and high - performance products. This is particularly useful in industries such as automotive and electronics, where products often require multiple plastic components with different properties.
  • Quality Monitoring System: Haitian's co - injection machines are equipped with advanced quality monitoring systems. These systems can detect any abnormalities in the production process, such as variations in layer thickness or material properties, and adjust the process parameters in real - time to ensure product quality.


Company Advantages

  • Large - scale Production Capacity: With its large - scale production facilities, Haitian can meet the high - volume demand for co - injection machines. This allows it to offer competitive prices to customers.
  • Strong R & D Team: The company has a strong research and development team that is constantly working on improving co - injection technology. It can introduce new products and features to the market in a timely manner.
  • Brand Influence: Haitian is a well - recognized brand in the global injection molding industry. Its brand reputation gives customers confidence in the quality and performance of its co - injection products.


5. Demag Plastics Group (China) Co., Ltd.

Demag is a global leader in the field of plastic processing machinery. Its presence in China has brought advanced co - injection technology to the local market.


Features in Co - injection

  • High - Precision Control: Demag's co - injection machines feature high - precision control systems. These systems can precisely control the injection of different plastics, ensuring accurate layer thickness and distribution. This high - precision control is essential for the production of high - quality products, such as medical devices and high - end consumer goods.
  • Process Optimization: The company focuses on process optimization for co - injection. It can analyze the production process in detail and provide customized solutions to improve production efficiency and product quality. For example, it can optimize the temperature and pressure settings during the co - injection process to reduce waste and improve the overall performance of the products.
  • Safety Features: Demag's co - injection machines are equipped with a variety of safety features. These features ensure the safety of operators during the production process, reducing the risk of accidents.


Company Advantages

  • Global Technology Platform: As a global company, Demag can share its advanced technology and experience across different regions. This allows its China branch to access the latest co - injection technology and best practices.
  • Training and Support: The company provides comprehensive training and support to its customers. It can train operators on how to use and maintain the co - injection machines, ensuring that customers can get the most out of their equipment.
  • Customized Solutions: Demag can provide customized co - injection solutions according to the specific needs of different industries. This flexibility makes it a popular choice for customers with diverse requirements.


6. ENGEL Machinery (Shanghai) Co., Ltd.

ENGEL is a well - respected manufacturer in the plastics processing industry. Its co - injection technology is at the forefront of the industry.


Features in Co - injection

  • Integrated Solutions: ENGEL offers integrated co - injection solutions, which include not only the injection molding machines but also the automation systems and process control software. This integration allows for seamless production processes and improved overall efficiency.
  • Innovative Materials Handling: The company has developed innovative materials handling systems for co - injection. These systems can accurately meter and convey different plastics to the injection unit, ensuring the stability and consistency of the co - injection process.
  • Sustainable Production: ENGEL is committed to sustainable production. Its co - injection machines can use recycled plastics and optimize the production process to reduce waste and energy consumption. This is in line with the growing global demand for sustainable manufacturing.


Company Advantages

  • Innovation - Driven: ENGEL has a strong focus on innovation. It invests heavily in research and development to introduce new co - injection technologies and solutions. This innovation ability helps it stay ahead of the competition.
  • Industry Experience: With decades of experience in the plastics processing industry, ENGEL has a deep understanding of different industries' requirements. This allows it to provide targeted co - injection solutions for different applications.
  • Global Service Network: The company has a global service network, which ensures that customers in China can receive timely technical support and after - sales service.


7. Arburg (China) Co., Ltd.

Arburg is known for its high - quality injection molding machines and advanced co - injection technology.


Features in Co - injection

  • All - Electric Technology: Arburg's co - injection machines often use all - electric technology. This technology offers several advantages, such as high energy efficiency, precise control, and low noise levels. It also allows for a cleaner and more environmentally friendly production process.
  • Modular Design: The company's machines have a modular design, which means that different components can be easily added or replaced. This flexibility allows customers to adapt the co - injection machines to different production requirements and future upgrades.
  • Process Transparency: Arburg's co - injection machines provide high process transparency. Operators can monitor and control every aspect of the production process in real - time, which helps to ensure product quality and consistency.


Company Advantages

  • German Engineering Precision: As a German company, Arburg is renowned for its engineering precision. Its co - injection machines are manufactured to the highest quality standards, ensuring reliable performance and long - term durability.
  • Customer - centric Approach: Arburg focuses on meeting the needs of its customers. It works closely with customers to understand their requirements and provides customized co - injection solutions.
  • Training and Education: The company offers comprehensive training and education programs for its customers. These programs help operators to master the operation and maintenance of co - injection machines, improving the overall efficiency of the production process.


8. Sumitomo (SHI) Demag Plastics Machinery (China) Co., Ltd.

This company combines the strengths of Sumitomo and Demag, offering high - quality co - injection solutions.


Features in Co - injection

  • Hybrid Technology: The co - injection machines of Sumitomo (SHI) Demag often use hybrid technology, which combines the advantages of hydraulic and electric systems. This technology provides high - speed injection, precise control, and energy efficiency.
  • Advanced Cooling Systems: The company's machines are equipped with advanced cooling systems. These systems can quickly cool the co - injection products, reducing the cycle time and improving production efficiency.
  • Quality Assurance: Sumitomo (SHI) Demag has a strict quality assurance system. It conducts comprehensive quality inspections at every stage of the production process, ensuring that the co - injection products meet high - quality standards.


Company Advantages

  • Combined Expertise: By combining the expertise of Sumitomo and Demag, the company can offer a wide range of co - injection solutions. It can draw on the best practices of both companies to develop innovative and high - performance products.
  • Localized Support: With its presence in China, the company can provide localized support to its customers. It understands the local market needs and can offer timely and effective solutions.
  • Product Upgradeability: The co - injection machines of Sumitomo (SHI) Demag are designed to be upgradeable. This allows customers to keep up with the latest technological developments and improve the performance of their production equipment over time.


9. Toshiba Machine (China) Co., Ltd.

Toshiba Machine is a well - known manufacturer of industrial machinery, and its co - injection technology is also highly regarded.


Features in Co - injection

  • Intelligent Control System: Toshiba Machine's co - injection machines are equipped with an intelligent control system. This system can automatically adjust the process parameters according to the production conditions, ensuring stable and high - quality production.
  • High - Quality Molds Compatibility: The company has a good understanding of mold design and manufacturing. Its co - injection machines are highly compatible with high - quality molds, which can further improve the quality of co - injection products.
  • Energy - saving Measures: Toshiba Machine has implemented various energy - saving measures in its co - injection machines. For example, it uses energy - recovery systems to reduce energy consumption during the production process.


Company Advantages

  • Technological Heritage: With a long - standing history of technological innovation, Toshiba Machine has a rich technological heritage. This allows it to develop advanced co - injection technology and products.
  • Comprehensive Product Portfolio: The company offers a comprehensive product portfolio of co - injection machines, covering different tonnages and applications. This gives customers a wide range of choices to meet their specific production needs.
  • After - sales Service Network: Toshiba Machine has a well - established after - sales service network in China. It can provide customers with prompt maintenance and repair services, ensuring the smooth operation of the co - injection machines.


10. Husky Injection Molding Systems (China) Co., Ltd.

Husky is a global leader in the injection molding industry, and its co - injection technology is widely used in various industries.


Features in Co - injection

  • Hot Runner Technology: Husky is well - known for its hot runner technology in co - injection. Hot runner systems can ensure uniform melt flow and temperature distribution, which is crucial for the quality of co - injection products. This technology can also reduce material waste and improve production efficiency.
  • Automation Integration: The company offers seamless integration of automation systems in its co - injection production lines. This allows for high - speed and efficient production, reducing labor costs and improving product consistency.
  • Product Development Support: Husky provides comprehensive product development support to its customers. It can help customers from the initial product design stage to the final production, ensuring that the co - injection products meet the market requirements.


Company Advantages

  • Industry Leadership: As an industry leader, Husky has a strong influence on the development of co - injection technology. It is often at the forefront of introducing new concepts and technologies to the market.
  • Global Customer Base: The company has a large global customer base, which gives it valuable feedback and experience. This allows it to continuously improve its co - injection products and services.
  • Training and Certification Programs: Husky offers training and certification programs for its customers. These programs can help operators and engineers to improve their skills and knowledge in co - injection technology.


Conclusion

The co - injection industry in China is booming, and these ten companies are at the forefront of this development. Each company has its own unique features and advantages in co - injection technology, whether it is precision molding, advanced machinery design, or excellent customer service. Hengji Mould & Plastic Co., Ltd. stands out with its precision and customization ability, while Yizumi Precision Machinery Co., Ltd. is known for its energy - efficient and Industry 4.0 - integrated machines. Chen Hsong Holdings Limited offers robust machines with flexible injection modes, and Haitian International Holdings Limited provides high - speed and multi - component injection capabilities. Demag Plastics Group (China) Co., Ltd. focuses on high - precision control, and ENGEL Machinery (Shanghai) Co., Ltd. offers integrated solutions. Arburg (China) Co., Ltd. is known for its all - electric technology and modular design, Sumitomo (SHI) Demag Plastics Machinery (China) Co., Ltd. combines hybrid technology and advanced cooling systems, Toshiba Machine (China) Co., Ltd. features an intelligent control system, and Husky Injection Molding Systems (China) Co., Ltd. excels in hot runner technology and automation integration. These companies not only meet the domestic demand for co - injection products but also have the potential to compete in the global market, driving the continuous development of the co - injection industry in China.


Send Inquiry

whatsapp

Phone

E-mail

Inquiry