Top 10 Custom Plastic Injection Molding Manufacturers in China

Finding Chinese injection molding suppliers is easy. Finding one whose tooling, engineering support, production model, and project scale actually match your requirements is harder.

This guide compares ten manufacturers serving different sourcing needs. HingTung is included as an integrated option for OEM projects requiring mold development, injection molding, and downstream production under one workflow.

Why Source Injection Molding in China?

The appeal of injection molding in China is not limited to lower tooling prices. China has mature manufacturing clusters for mold steel, CNC and EDM machining, standard mold components, injection molding, finishing, assembly, and export logistics.

That gives buyers access to everything from specialist mold makers to integrated China injection molding services. The right model depends on whether the project mainly needs tooling, molded parts, precision engineering, or a broader manufacturing workflow.

For a wider international comparison, see our guide to 10 plastic injection molding manufacturers for custom parts.

10 Chinese Injection Molding Manufacturers to Consider

This list focuses on companies that manufacture molds and/or custom molded parts. Injection molding machine brands are excluded because they serve a different purchasing need.

1. HingTung — Integrated OEM Manufacturing

HingTung is a China-based plastic injection molding manufacturer founded in 2011. Its 50,000 m² facility combines DFM, mold manufacturing, injection molding, CNC machining, secondary processing, assembly, and quality inspection.

Its main advantage is continuity. Tooling engineers and production teams work within the same manufacturing workflow, which can simplify engineering changes as a project moves from mold trials into repeat production.

Key strengths

• DFM through final assembly
• 350+ machines and equipment
• Tooling and molding under one workflow
• Broad engineering and production support

Potential limitations

• More capability than tooling-only projects need
• Not positioned around lowest upfront price

Best suited for

• Integrated OEM production
• Projects requiring DFM and engineering support
• Tooling followed by repeat molding

For similar manufacturing models, see our comparison of custom plastic manufacturers for custom parts.

2. TK Mold — Established Tooling and Mass Production

TK Mold has operated in mold manufacturing since the 1980s and has developed into a larger tooling and production group. Its services cover structural analysis, mold development, validation, injection molding, surface treatment, and mass production.

Its scale makes it particularly relevant to established OEM programs where tooling management and repeat manufacturing matter more than sourcing a simple low-cost mold.

Key strengths

• Decades of mold-making experience
• Tool validation and production
• Large manufacturing organization

Potential limitation

• May be excessive for small, simple projects

Best suited for

• Long-term OEM programs
• Structured tooling and production

3. Silver Basis Technology — Automotive and Precision Tooling

Silver Basis Technology is a large Chinese precision tooling and component manufacturer with significant exposure to automotive and industrial applications.

Compared with smaller mold shops, its strengths are scale, tooling engineering, and experience supporting structured manufacturing programs.

Key strengths

• Strong precision tooling background
• Automotive manufacturing experience
• Large production organization

Potential limitation

• Smaller projects may not match its core positioning

Best suited for

• Automotive tooling
• Precision industrial programs

For automotive-specific sourcing, see our guide to automotive injection molding companies.

4. JMT Mould — Automotive and Tooling-Intensive Projects

JMT Mould focuses heavily on automotive, appliance, and industrial molds. Its manufacturing resources include CNC machining, EDM, five-axis machining, mold assembly, and injection molding equipment.

This tooling-heavy structure makes JMT more relevant when mold engineering is a major part of the sourcing decision.

Key strengths

• Automotive mold experience
• CNC and EDM capability
• Mold-to-production support

Potential limitation

• Less differentiated for simple molded parts

Best suited for

• Automotive molds
• Complex tooling programs

5. FOW Mould — Export Mold and Molding Projects

FOW Mould provides mold design, tooling, and plastic injection molding for international customers. Its model is typical of an export-focused China plastic injection molding supplier that can build the tool and continue into part production.

Keeping tooling and initial molding with one supplier can reduce handoffs during mold trials and early production.

Key strengths

• Mold design and manufacturing
• Injection molding support
• Export project experience

Potential limitation

• Less broad than multi-process manufacturers

Best suited for

• Export mold programs
• Tooling followed by molding

6. FirstMold — Prototype-to-Production Manufacturing

FirstMold combines mold making and plastic injection molding in China with CNC machining, prototyping, die casting, and assembly.

Its wider process range is useful when a product contains several types of manufactured components or needs prototypes before production tooling is finalized.

Key strengths

• Prototype through production
• Multiple manufacturing processes
• Tooling and molding capability

Potential limitation

• Less specialized than tooling-only companies

Best suited for

• New product development
• Multi-process projects

You can compare more supplier models in our guide to 8 plastic injection molding companies.

7. Topworks Plastic Mold — Custom Injection Tooling

Topworks Plastic Mold focuses on custom mold development and plastic molding for international projects.

Its profile is particularly relevant to buyers whose priority is finding a China injection mold manufacturer rather than a broad contract manufacturing partner.

Key strengths

• Custom mold development
• Mold engineering support
• Injection molding capability

Potential limitation

• Downstream manufacturing is not its main differentiator

Best suited for

• Custom injection molds
• Tooling-led sourcing

8. SINO MOULD — Production Mold Manufacturing

SINO MOULD is an established Zhejiang mold manufacturer serving several mold categories, including automotive, appliance, and packaging applications.

Its broad tooling portfolio makes it relevant when production mold capacity and experience are more important than extensive assembly or secondary manufacturing.

Key strengths

• Broad mold portfolio
• Production tooling experience
• Established mold-making capacity

Potential limitation

• Tooling is the main focus

Best suited for

• Production molds
• Higher-output tooling programs

9. HanKing Mould — Precision Injection Molds

HanKing Mould focuses on precision mold development, including mold design, machining, assembly, trials, and molding support.

For buyers comparing injection mold manufacturers in China, its strongest fit is projects where precision tooling and mold project management are central requirements.

Key strengths

• Precision mold focus
• In-house mold development
• Tool trials and molding support

Potential limitation

• Less suited to assembly-heavy programs

Best suited for

• Precision components
• Injection mold tooling in China

10. Packson Mold — General Mold and Molding Programs

Packson Mold combines custom mold manufacturing with plastic injection molding and related production support.

Its manufacturing model sits between a dedicated mold maker and a broader contract manufacturer, making it a practical option for conventional custom plastic projects.

Key strengths

• Mold manufacturing
• Injection molding
• Production support

Potential limitation

• Less differentiated for highly specialized programs

Best suited for

• General custom molding
• Mold-and-part sourcing

Compare the Tooling Scope, Not Just the Quote

Tooling cost is one of the biggest reasons companies investigate custom injection molding in China, but quotes should only be compared when they describe equivalent molds.

A $20,000 mold and a $35,000 mold may differ in steel, cavity count, hot runner system, components, expected life, included revisions, and inspection scope.

DFM should also happen before steel cutting. Gate position, draft, wall thickness, parting lines, ejection, undercuts, shrinkage, and tolerance assumptions are much easier to correct before the mold has been manufactured.

A structured injection molding DFM review is therefore often more meaningful than a small difference in the initial tooling quote.

When evaluating Chinese injection molding manufacturers, it is also worth confirming which operations are actually performed by the company. Factory tours, production videos, equipment lists, quality records, and relevant project examples can help distinguish an actual manufacturer from a sourcing or trading operation.

Our plastic parts manufacturer selection checklist covers the main points worth checking before placing an order.

FAQs

Where are the main injection molding manufacturing regions in China?

Guangdong, Zhejiang, Jiangsu, and the Shanghai region contain major mold and plastics manufacturing clusters. These areas provide access to toolmakers, machining suppliers, materials, mold components, finishing services, and export infrastructure.

Can a mold made in China run in another country?

Yes, but the mold should be designed around the destination molding machine and factory standards. Confirm mold dimensions, locating rings, nozzle interfaces, hot runner controls, electrical connections, and other machine interfaces before tooling begins.

Which certifications should a Chinese injection molding company have?

ISO 9001 is a common quality-management certification. Automotive projects may also require systems such as IATF 16949. Certification alone is not sufficient, so buyers should also review inspection capability, traceability, process records, and relevant production experience.

Should I use a third-party factory audit?

An audit can be useful for high-value tooling or long-term production programs, particularly when an on-site visit is impractical. It can help verify facilities, equipment, quality systems, and whether key manufacturing operations are genuinely performed in-house.

Conclusion

The Chinese injection molding market includes precision mold specialists, large automotive toolmakers, export-focused mold suppliers, and integrated manufacturers.

For OEM programs that benefit from keeping DFM, tooling, molding, secondary processing, and assembly together, HingTung offers one integrated option. Whatever supplier you choose, match its actual manufacturing model to the project rather than comparing price alone.