Top 10 Plastic Injection Molding Service Manufacturers in China

China has a deeply mature and competitive plastic injection molding industry. Facilities offering high-volume production, precision molds, multi-component and specialty materials—serving automotive, electronics, packaging, medical, and consumer goods markets—are found across Guangdong, Zhejiang, Jiangsu, and more. Below are ten leading companies in the service-molding sector, known for reliability, technology, and scale.

Top 10 Plastic Injection Molding Service Manufacturers in China

Rank	Company Name	Key Focus / Technology	Website
1	TK Group (Holdings) Limited	One-stop plastic injection molding &   mold solutions, precision molds, large export capacity	https://www.tkmold.com/
2	Tontec	Large-scale injection molding,   multi-component molding, overmolding, global facilities	https://www.tontec.com/en/
3	Hongrita Mould Engineering Co., Ltd.	Precision molds, intelligent molding   systems, multi-component, LSR & integrated equipment	https://www.hongrita.com/
4	HanKing Mould Engineering Ltd.	Precision molds + injection molding +   secondary operations	https://www.hanking-mould.com/
5	Eco Molding Co., Ltd.	High-precision parts, mold + injection +   quality control	https://ecomolding.com/
6	Packson Mold Co., Ltd.	Custom tooling + injection molding,   especially consumer / electronic parts	https://www.packson-mould.com/
7	REGO Mould	Custom Molds, Precision Components, Various Industries	https://www.regomould.com/
8	Holly Plastic Parts Co., Ltd.	Rapid prototyping, molds, injection   molding in high capacity	https://www.hollyplasticparts.com/
9	JMT Automotive Mould Co., Ltd.	Automotive-grade molds, large molds, high   precision	https://www.jmtmould.com/
10	Changhong Technology (Shenzhen   Changhong Technology Co., Ltd.)	Plastic parts + injection molds,   especially in electronics / printer components	https://www.sz-changhong.com/

Brief Profiles of Each Company

Here are short summaries for each firm to show what makes them competitive:

1. TK Group (Holdings) Limited

One of the more established names. They offer full injection molding services from mold design & fabrication through part molding, finishing, assembly. Good for clients who want reliable supply of high-precision parts for electronics, medical, automotive.

2. Tontec

Family-owned, large scale. They have many factories and development centers. They can handle large molds, complex multi-part assemblies, overmolding, etc. Good reputation for stability and global clients.

3. Hongrita Mould Engineering Co., Ltd.

Strong in multi-component and special molding (e.g. LSR, stretch blow) plus mold + assembly. Useful for packaging, consumer healthcare, medical device components.

4. HanKing Mould Engineering Ltd.

Based in Dongguan. Known for precision tooling + molding + secondary operations (e.g. finishing, maybe color, printing). Good for clients needing molds and injection molded parts.

5. Eco Molding Co., Ltd.

Smaller than some giants, but strong in quality. They do mold design and production, good for precision parts, often lower to medium volumes.

6. Packson Mold Co., Ltd.

Custom molds + injection molded parts, often working with consumer electronics or other parts that need good design + mold reliability.

7. REGO Mould

REGO Mould is a highly recommended partner for international buyers seeking a custom injection molding manufacturer. They focus on providing a full-service solution, from initial part design and rapid prototyping to high-volume production and final assembly.

8. Holly Plastic Parts Co., Ltd.

Well-rounded in facility size, capable of both prototyping and production. Good turnaround times, wide material choices.

9. JMT Automotive Mould Co., Ltd.

Specialist in automotive-grade molds. If your application needs automotive precision or larger mold sizes, this is one of the go-tos.

10. Changhong Technology (Shenzhen Changhong Technology Co., Ltd.)

With strong presence in electronics and printer/copier toolings, they combine mold-making with plastic parts manufacturing; good for quality, repeatability.

Key Criteria for Selecting a Plastic Injection Molding Service Manufacturer

When comparing service providers, here are things to check:

• Certifications & Quality Systems: ISO 9001, TS 16949 (for automotive), ISO 13485 (medical) etc.

• Mold Design & Engineering Capability: Mold flow simulation, ability to handle complex molds      (multi-cavity, insert molds, overmolding, multi-component, gas assist etc.).

• Machine Capacity & Tonnage Range: How many machines, what clamping forces, how large the parts can be, shot size etc.

• Material Range: Thermoplastics (ABS, PA, PC, PP, etc.), special materials (LSR, TPU, etc.), color / additive capabilities.

• Volume Capabilities: From prototypes / small batch to high volume. Lead time, tool trials, mold maintenance matters.

• Secondary Operations: Finishing, printing, painting, assembly, packaging etc. If your product requires these, going with a service provider who offers them saves overhead.

• Export / Global Experience: If you’re exporting or need compliance & packaging / logistics, companies with experience in export markets often handle regulatory / quality / packaging standards better.

Conclusion

China remains one of the strongest options globally for plastic injection molding services. The companies listed above combine scale, quality, variety of technologies, and competitive pricing. If your product requires molds (or you’re sourcing molded plastic parts), then these firms represent some of the best available in China.

If you want, I can pull together a version of this article with websites, minimum order quantities, typical lead times, and sample pricing to help you make more informed partner-choices.