Are you looking for the best injection molding manufacturers in China to fulfill your custom business? As we all know, real factories mean first-hand prices. However, faced with so many choices, you may feel overwhelmed and difficult to distinguish them. In this guide, Holly selected the top 10 real injection molding manufacturers in China, all of which have real factories.
With advanced technology and strict quality management system, they continue to promote the development of injection molding process in China and occupy an important position in the global plastic manufacturing market. So if you want to do business directly with injection molding manufacturing companies, this guide will help you.
1. List of the 10 Chinese Injection Molded Parts Manufacturers
| NO | Company | Business Type | Website | Year Founded |
| 1 | China Plastic Products Co. | plastic injection molding manufacturer | chinaplasticproductsco.com | 1966 |
| 2 | Holly Plastic Parts | custom plastic injection molding manufacturer | hollyplasticparts.com | 2000 |
| 3 | 3Q Machining | plastic injection molding manufacturer | 3qmachining.com | 2016 |
| 4 | WayKen Rapid Manufacturing | rapid prototyping manufacturer | waykenrm.com | 2006 |
| 5 | MGA Plastic | injection molding manufacturer | mgaplastic.com | over 15 years |
| 6 | Ruicheng Precision Mold | precision mold manufacturer | chinaruicheng.com | 2002 |
| 7 | PF Mold Co., Ltd. | high-precision injection molds manufacturer | pfmold.com | 2006 |
| 8 | Best Times Mould & Plastic Products | mold design and manufacturing services supplier | besttimes-mould.com | 2007 |
| 9 | RT Prototype | rapid prototyping manufacturer | rtprototype.com | 2004 |
| 10 | Rubber Plastic Parts | custom rubber and plastic components manufacturer | rubberplasticparts.com | 1998 |
2. Top 10 Injection Molded Parts Manufacturers in China
Let us look at the top 10 Injection Molded Parts Manufacturers in China
Top 1: China Plastic Products Co.
China Plastic Parts, Inc. is a veteran injection molding company with over 47 years of experience in producing precision plastic components for industries such as automotive, medical, and consumer electronics. Headquartered in China, the company serves global clients with vertically integrated manufacturing solutions, including mold design, injection molding, overmolding, insert molding, and post-processing.
Their facility houses more than 60 injection molding machines ranging from 50 to 800 tons in clamping force, capable of producing components from under 1g to over 3kg. The company works with a wide variety of engineering-grade thermoplastics, including ABS, PA66, PC, POM, and TPE, and adheres to ISO 9001 quality management standards.
China Plastic Parts also provides secondary services such as ultrasonic welding, pad printing, and custom assembly, making them a one-stop solution for OEMs worldwide. A notable client case involved a European automotive electronics manufacturer, which partnered with the company to produce a complex multi-component housing using insert molding. The project achieved a 22% reduction in assembly cost and improved product durability. Their technical expertise, fast lead times, and high-quality output continue to make them a reliable supplier for international injection molded part sourcing.
Website: chinaplasticproductsco.com
Founded: 1966
Location: China
Products: Plastic injection molded parts, blow-molded components, plastic extrusions.
Top 2: Holly Plastic Parts
Holly Plastic Parts is a professional plastic injection molding manufacturer based in China with over 15 years of industry experience. The company operates a 6,000-square-meter facility equipped with more than 50 injection molding machines, ranging from 50 to 800 tons in clamping force, allowing them to handle both small precision parts and large structural components.
Holly provides full-service manufacturing, including mold design, mold fabrication, plastic injection molding, and secondary operations such as ultrasonic welding, pad printing, and final assembly. The company is ISO 9001 certified and works with a wide range of engineering plastics such as PC, ABS, PP, PA6, PBT, and TPE to serve industries including electronics, automotive, medical, and home appliances.
Advanced technologies like insert molding, gas-assisted molding, and overmolding are available to meet complex part requirements. Holly maintains a monthly production capacity of over 1 million parts and serves both prototype and mass production needs.
In a recent case, Holly partnered with a Japanese home appliance brand to manufacture precision switch panels using high-gloss PC/ABS material. Through optimized mold design and process control, Holly reduced cycle times by 18% and ensured zero visible flow marks, enhancing the customer’s product aesthetic and market competitiveness.
Website: hollyplasticparts.com
Founded: 2000
Location: China
Products: Injection molded parts, CNC machined components, rapid prototypes.
Top 3: 3Q Machining
3Q Machining is a comprehensive precision manufacturing company located in Dongguan, China, offering plastic injection molding alongside CNC machining, die casting, and 3D printing services. With over 10 years of manufacturing experience, the company serves global clients in automotive, robotics, consumer electronics, and medical device industries.
3Q operates a modern 5,000-square-meter facility equipped with more than 30 injection molding machines ranging from 80 to 450 tons, capable of producing parts from 1g to 2kg in weight. Their capabilities cover single-cavity and multi-cavity molds, rapid tooling, insert molding, and overmolding. Materials commonly processed include ABS, PA6/66, PC, POM, and TPU. The company is ISO 9001 certified and emphasizes tight tolerance control down to ±0.02 mm.
In addition to molding, 3Q provides in-house mold fabrication, post-processing (such as laser engraving and silk printing), and final product assembly. Their team supports customers from design verification to full production runs, offering DFM and mold flow analysis for complex projects.
A notable collaboration involved a German medical device startup, which partnered with 3Q Machining for low-volume production of disposable surgical tool housings. By combining rapid tooling and tight-tolerance molding, 3Q helped the client bring the product to market 30% faster while maintaining strict quality standards.
Website: 3qmachining.com
Founded: 2016
Location: China
Products: CNC machined parts, rapid prototypes, low-volume production parts.
Top 4: WayKen Rapid Manufacturing
WayKen is a leading rapid manufacturing and injection molding company headquartered in Shenzhen, China. Specializing in prototyping and low-volume production, the company serves clients in automotive, aerospace, consumer electronics, and medical industries. With over 20 years of experience, WayKen provides end-to-end services from product development to on-demand manufacturing.
The company operates a 6,000-square-meter facility equipped with 20+ injection molding machines ranging from 60 to 500 tons, suitable for small to medium-sized molded parts. WayKen supports a wide range of materials including ABS, PC, PA, PMMA, and POM. They are also proficient in complex molding processes such as insert molding, overmolding, and rapid bridge tooling.
Certified under ISO 9001, WayKen emphasizes precision and fast turnaround. Their rapid tooling service can deliver injection-molded parts in as little as 7 days, making them ideal for engineering validation tests and pre-production batches. Post-processing options such as polishing, painting, laser etching, and assembly are also available in-house.
In a recent project, WayKen collaborated with a U.S.-based automotive tech firm to prototype an integrated sensor housing with a tight development schedule. Through fast mold fabrication and short-cycle production, WayKen delivered 1,000 functional units within 14 days, accelerating the client’s product validation timeline significantly.
Website: waykenrm.com
Founded: 2006
Location: Shenzhen, China
Products: CNC prototypes, 3D printed parts, vacuum casting components.
Top 5: MGA Plastic
MGA Plastic is a China-based injection molding manufacturer with over 15 years of experience delivering custom plastic components for global clients in automotive, consumer electronics, lighting, and industrial equipment sectors. The company operates a fully integrated 5,500-square-meter production facility in Shenzhen, offering comprehensive services from mold design and fabrication to injection molding and final product assembly.
MGA is equipped with over 25 injection molding machines ranging from 50 to 500 tons, enabling them to produce parts up to 750mm in length and weighing up to 2.5 kg. They process a broad range of materials including ABS, PC, PA66, PBT, and TPE. Their in-house tooling workshop supports rapid mold development, with lead times as short as 10 days for production-ready molds.
Certified to ISO 9001 and IATF 16949 standards, MGA Plastic maintains a strong focus on quality and traceability. The company also provides value-added services such as 3D printing, pad printing, ultrasonic welding, and custom packaging.
A notable case involved a Canadian smart lighting brand, which partnered with MGA to produce heat-resistant polycarbonate enclosures for outdoor LED fixtures. MGA optimized the mold design for UV-stable materials and delivered over 200,000 units with a defect rate below 0.4%, helping the client meet seasonal retail demand on time.
Website: mgaplastic.com
Founded: over 15 years
Location: China
Products: Plastic injection molded parts, assemblies, and custom plastic components.
Top 6: Ruicheng Precision Mold
Xiamen Ruicheng Industrial Design Co., Ltd. is a professional plastic injection molding and rapid manufacturing company based in Xiamen, China. With over 12 years of industry experience, Ruicheng focuses on rapid tooling and low-to-medium-volume plastic production for clients in automotive, medical, electronics, and home appliance sectors.
The company operates a 3,000-square-meter facility equipped with more than 20 injection molding machines ranging from 50 to 400 tons. They support a wide range of engineering plastics such as ABS, PC, PA6, PMMA, and TPU, offering mold tolerances down to ±0.01 mm. Ruicheng’s strength lies in fast mold development—capable of producing fully functional tools in as little as 7–10 days.
Ruicheng offers a complete service package, including industrial design, DFM analysis, CNC prototyping, rapid mold making, injection molding, and post-processing services such as painting, silk-screening, and final assembly. The company is ISO 9001 certified and specializes in short-cycle development for time-sensitive projects.
In a recent collaboration with a U.S.-based electronics startup, Ruicheng produced 5,000 pieces of custom connector housings using a rapid injection mold. The project was completed from design to delivery within three weeks, helping the client meet a critical product launch schedule.
Website: chinaruicheng.com
Founded: 2002
Location: Dongguan, China
Products: Plastic injection molds, molded parts, custom tooling solutions.
Top 7: PF Mold Co., Ltd.
PF Mold Co., Ltd. is a professional plastic injection mold maker and parts manufacturer based in Shenzhen, China. With over 20 years of experience, the company provides comprehensive solutions for injection molded parts, serving industries such as automotive, consumer electronics, home appliances, and medical devices. PF Mold operates a 7,000-square-meter facility equipped with over 40 injection molding machines ranging from 50 to 600 tons, capable of producing parts from 0.1g to 3,500g in weight.
The company maintains a fully equipped mold workshop with CNC, EDM, and wire-cut machines, allowing for rapid mold fabrication and high-precision tool construction. PF Mold works with a wide range of thermoplastics including PC, ABS, PP, PA, TPE, and PBT, and adheres to ISO 9001 quality standards. Their service portfolio includes mold design, DFM analysis, mold making, mass production, and post-processing such as pad printing, assembly, and custom packaging.
In a recent case, PF Mold partnered with a European appliance manufacturer to develop a multi-cavity mold for dishwasher components. Through optimized cooling design and high-precision cavity alignment, PF Mold helped the client reduce cycle time by 20% and improve dimensional consistency, ensuring the success of a high-volume product launch.
Website: pfmold.com
Founded: 2006
Location: Shenzhen
Products: Injection molds, molded plastic parts, rapid prototypes.
Top 8: Best Times Mould & Plastic Products
Best Times Mould & Plastic is a high-precision plastic injection molding and mold manufacturing company based in Dongguan, China. With over 18 years of experience, the company provides integrated services from mold design to mass production, serving global clients in the automotive, electronics, medical, and consumer goods sectors.
Best Times operates a 6,500-square-meter facility equipped with 36 injection molding machines ranging from 60 to 2,500 tons in clamping force. They are capable of producing small precision parts to large complex components with product tolerances as tight as ±0.025 mm. Their in-house toolroom includes high-speed CNCs, EDMs, and CMMs, supporting mold tolerances down to ±0.01 mm.
The company is ISO 9001 and IATF 16949 certified, with a strong focus on high-cavity molds, multi-shot molding, and custom-engineered solutions. Their services also include overmolding, insert molding, ultrasonic welding, and assembly. Best Times has delivered over 5,000 molds and serves customers in more than 30 countries.
In a recent project with a U.S. automotive client, Best Times produced a dual-material dashboard component using 2K injection molding. The solution improved part strength and aesthetics, while reducing assembly time by 35%. Their engineering support and stable quality ensured smooth mass production for the client.
Website: besttimes-mould.com
Founded: 2007
Location: Shenzhen, China
Products: Plastic injection molds, custom-molded components, and assembly services.
Top 9: RT Prototype
Ruitai Mould is a trusted provider of custom plastic injection molding and rapid prototyping services based in Shenzhen, China. With over 15 years of experience, the company focuses on low to medium volume production and serves industries including automotive, consumer electronics, industrial equipment, and medical devices.
Ruitai operates a 4,500-square-meter facility equipped with more than 20 injection molding machines ranging from 60 to 500 tons, capable of producing complex parts weighing from 1g to 2kg. The company works with materials such as ABS, PC, PA, PBT, TPE, and PPS, offering tight tolerance molding and in-house mold fabrication. Ruitai is ISO 9001 certified and supports both prototype tooling and production tooling needs.
Their services include rapid tooling, insert and overmolding, short-run injection molding, and post-processing such as painting, laser etching, and product assembly. Typical project turnaround times range from 7 to 20 days, making Ruitai a flexible partner for fast-moving product development cycles.
In a notable case, Ruitai worked with a European robotics startup to deliver 8,000 customized enclosures using a rapid aluminum mold. The project enabled the client to test and scale early-stage product batches with commercial-grade quality, helping them accelerate investor demos and pre-orders.
Website: rtprototype.com
Founded: 2004
Location: Shenzhen, China
Products: CNC machined prototypes, 3D printed components, rapid production parts.
Top 10: Rubber Plastic Parts
Rubber Plastic Parts Co., Ltd. is a specialized manufacturer of custom plastic injection molded and rubber components based in Ningbo, China. With more than 15 years of experience, the company provides one-stop OEM/ODM solutions for clients in automotive, consumer products, electrical appliances, and industrial equipment sectors.
The factory spans over 5,000 square meters and houses over 30 injection molding machines ranging from 80 to 400 tons. The company handles a broad range of materials including ABS, PC, PP, PA66, PBT, TPU, silicone rubber, and fluorosilicone, enabling them to support both plastic and rubber overmolding projects. Monthly production capacity exceeds 1 million molded parts, with ISO 9001 and IATF 16949 certification ensuring consistent quality control.
In addition to plastic injection molding, the company provides in-house mold fabrication, secondary processing (e.g., pad printing, ultrasonic welding), and custom packaging services. Rubber Plastic Parts also excels at high-cavitation tooling for small and medium-sized components.
In a recent project, they collaborated with a Southeast Asian appliance manufacturer to produce durable rubber-plastic hybrid seals for water filtration systems. Their ability to combine elastomeric and rigid components in a single process helped reduce part count by 40% and streamline the client’s assembly workflow.
Website: rubberplasticparts.com
Founded: 1998
Location: Hangzhou
Products: Custom rubber parts
plastic injection molded components, seals, and gaskets
3. How to Select a Reliable Plastic Parts Manufacturer in China?
Next, we will give you some system ways and hypothetical scenarios on how to select a reliable plastic parts manufacturer in China.
1) systematic approach
Selecting the right injection molded parts manufacturer in China requires a systematic approach to ensure quality, reliability, and cost-effectiveness. Here are specified ways to make the right choice:
Assess Manufacturing Capabilities
- Machine Availability
- Material Expertise
- Production Scale
- Specialized Processes
Review Certifications and Compliance
- ISO 9001 Certification
- Industry-Specific Standards
- Material Compliance
Evaluate Quality Control Practices
- Inspection Procedures
- Testing Capabilities
- Sample Evaluation
Analyze Tooling and Mold Design Expertise
- In-House Tooling
- Mold Maintenance
- Mold Life Expectancy
Check Experience and Industry Focus
- Industry Specialization
- Portfolio Review
- Years in Business
Inspect Lead Times and Production Scalability
- Prototype Speed
- Turnaround Time
- Scalability
Understand Cost Transparency
- Mold Cost
- Unit Cost
- Hidden Fees
Investigate Communication and Support
- Language Skills
- Response Time
- Dedicated Account Manager
Verify Intellectual Property (IP) Protection
- NDA Agreements
- Tooling Ownership
- Registered Designs
Conduct an On-Site Visit or Virtual Audit
- Facility Tour
- Third-Party Audit
Check References and Reviews
- Customer References
- Online Reviews
- Industry Reputation
Negotiate Flexible Terms
- Payment Terms
- Order Flexibility
- Long-Term Collaboration
Request Trial Orders: Start with a small production run to evaluate their capabilities, quality, and communication before committing to larger projects.
2) Some examples of how to select a reliable plastic parts manufacturer in China
Here are examples of how to apply the steps to select the right injection molded parts manufacturers in China, using real-world situations and hypothetical scenarios:
Example 1: Automotive Components Manufacturer
Scenario: You need injection-molded plastic parts for automotive interiors, requiring tight tolerances and high durability.
Steps:
Shortlist companies specializing in automotive-grade plastics, such as PF Mold Co., Ltd. or Ruicheng Precision Mold.
Check if they comply with IATF 16949 automotive standards.
Request samples of similar parts they’ve produced and inquire about the mold life expectancy for high-volume production.
Conduct a third-party audit of their facility or ask for a virtual factory tour.
Example 2: Consumer Electronics Manufacturer
Scenario: You need precise, aesthetically finished plastic casings for a new consumer electronics product.
Steps:
Choose a manufacturer experienced in electronics parts, such as Holly Plastic Parts or Best Times Mould.
Ensure they can provide high-gloss surface finishes and insert molding for integrating metal components.
Ask for their quality control practices, including dimensional inspection reports for prototypes.
Negotiate a trial order of 500 units to evaluate quality, lead time, and communication.
Example 3: Medical Device Manufacturer
Scenario: You require biocompatible plastic parts for a medical device.
Steps:
Look for manufacturers with expertise in medical-grade plastics, such as WayKen Rapid Manufacturing (waykenrm.com).
Verify their compliance with ISO 13485 for medical devices and FDA-approved materials.
Request detailed documentation on material sourcing and processing.
Assess their testing capabilities, such as tensile strength and surface roughness testing.
Example 4: Start-Up Needing Rapid Prototyping
Scenario: As a start-up, you need prototypes of an innovative product quickly and affordably.
Steps:
Partner with a company specializing in rapid prototyping and injection molding, like RT Prototype or Holly Plastic Parts.
Request a fast turnaround for CNC machined prototypes or 3D-printed molds before committing to a full production run.
Negotiate for flexible order volumes as you scale up production.
Example 5: IP Protection for a Unique Design
Scenario: You’ve developed a patented design and need a manufacturer with strong IP protection measures.
Steps:
Select a manufacturer willing to sign an NDA, such as Rubber Plastic Parts.
Confirm that you will retain ownership of the mold and have it shipped back if the partnership ends.
Register your design patents in China to strengthen legal protection.
Example 6: Large-Scale Production of Packaging Products
Scenario: You require high-volume production of plastic containers for the food industry.
Steps:
Look for companies experienced in packaging solutions, such as MGA Plastic.
Ensure they use food-grade materials and meet RoHS or FDA compliance standards.
Verify their production capacity to meet millions of parts annually.
Negotiate long-term contracts for consistent pricing and priority production slots.
By following these specific examples, you can tailor your approach based on industry, product requirements, and priorities. This ensures you select a manufacturer that aligns with your goals.
4. Conclusion
Finding a reliable injection molding supplier in China is a process that requires patience, diligence, and strategic thinking. By following the steps outlined in this guide, you will be well-positioned to navigate the complexities of sourcing from China’s vast manufacturing landscape. So, are you ready to embark on your journey to find the top injection molding suppliers in China? With this guide, you’ll be well-prepared to take the first step toward a successful manufacturing partnership.