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China has a deep supply base for injection molds and molded plastic parts. In areas such as Guangdong and Zhejiang, mold shops, molding factories, machining suppliers, finishing operations, and assembly resources often sit within the same manufacturing network.
That makes sourcing plastic injection molding in China attractive, but it also makes supplier comparison harder. Two factories may quote the same drawing and offer very different levels of tooling control, engineering support, inspection, and production follow-up. Those differences usually become more important after the mold is built.
How to Choose an Injection Molding Company in China
Before comparing prices, first check what each factory actually controls. Looking at different injection molding suppliers can help overseas buyers understand differences in tooling, engineering support, quality control, and production capabilities. For overseas projects, these points usually reveal more than the quotation alone:
- Tooling: Who designs, machines, trials, and corrects the mold?
- Molding capacity: Check machine range, materials, part size, and available production capacity.
- Engineering: DFM review and drawing feedback can prevent expensive tool changes later.
- Quality: Look beyond certificates to inspection equipment, records, and process control.
- Communication: Ask how sample feedback, ECNs, and production changes are handled.
- Total cost: Tooling, molding, inspection, finishing, freight, and duties all matter. A clear injection molding cost breakdown helps separate a low quote from a genuinely competitive project.
Top 10 Plastic Injection Molding Companies in China at a Glance
| Company | Key Strengths | Best For |
| HingTung | Integrated production and inspection | OEM projects |
| TK Group | Large manufacturing network | Large programs |
| Silver Basis Technology | Automotive and corporate scale | Automotive programs |
| EVA Precision Industrial Holdings | High-volume manufacturing | Precision production |
| JMT Mould | Automotive tooling | Vehicle-related projects |
| Sino Mould | Broad mold portfolio | Tooling-led projects |
| HanKing Mould | Precision project management | Custom molds |
| Topworks Plastic Mold | Export project support | Overseas OEM work |
| FOW Mould | Focused mold specialization | Packaging products |
| FirstMold | Broad process range | Multi-process projects |
Top 10 Plastic Injection Molding Companies in China
1. HingTung — Tooling Through Final Assembly
HingTung supports projects beyond mold making, with DFM, tooling, injection molding, CNC machining, secondary processing, assembly, and inspection handled within one manufacturing workflow. Its 50,000 m² production facility includes 350+ molding and CNC machines, injection molding systems up to 650 tons, and more than 200 specialized production and testing machines. Testing capabilities include thermal-shock testing, ball-drop impact testing, 2D vision measurement, and melt-flow-index testing. HingTung also holds ISO 9001, ISO 14001, and IATF 16949 certifications.
- In-house mold development and DFM support
- Custom plastic injection molding from trials to repeat production
- CNC machining, silicone molding, assembly, and inspection
- A practical option for OEM teams sourcing custom injection molding in China
2. TK Group — Large Production Network
TK Group has operated in mold manufacturing since 1983. Its footprint is considerably larger than that of a typical independent mold shop, with production in Shenzhen, Huizhou, Suzhou, and Vietnam. The group states that it has roughly 180,000 m² of building area and more than 4,000 employees. Structural analysis, mold development, validation, molding, and surface treatment are all part of its offering, so the company is geared toward sizable, long-running programs rather than isolated mold orders.
3.FirstMold — Broad Custom Manufacturing
FirstMold combines injection molding and mold making with CNC machining, die casting, prototyping, and assembly. It reports more than 30,000 m² of factory space in China and also has manufacturing capacity in Mexico. The company therefore sits closer to a multi-process contract manufacturer than to a standalone injection mold maker in China.
4. RapidDirect — From Prototype to Production Molding
RapidDirect provides custom injection molding from mold development through production parts, with DFM support, overmolding, insert molding, and precision mold tooling included in its service range. Its China-based injection molding network uses presses from 90 to 830 tons, and the company also supports CNC machining, sheet metal fabrication, and other manufacturing processes. For overseas teams comparing China injection molding services, RapidDirect stands out for its online quoting workflow and ability to move from prototypes into production through the same platform.
5. JMT Mould — Automotive Mold Specialist
JMT is easier to place because its specialization is clear. Automotive exterior and interior parts, lighting, HVAC components, and two-shot applications form a large part of its mold portfolio. The company states that it has more than 20 years of mold experience, around 400 employees, and over 80 precision machines. ISO 9001 and IATF 16949 certifications also support its automotive positioning. Moldflow analysis and molded-part production are available in addition to tooling.
6. Sino Mould — Tooling-Focused Manufacturing
Sino Mould is primarily a mold company. Its portfolio spans packaging, appliances, household products, automotive parts, logistics products, and electronics. That makes the company different from suppliers trying to sell a broad contract-manufacturing package. For a customer whose first concern is finding a China injection mold manufacturer, that tooling focus can be an advantage rather than a limitation.
7. HanKing Mould — Precision Molds With Follow-On Production
HanKing has produced custom plastic molds since 1996 and also handles trials, injection molding, secondary processing, and assembly. Its molding range extends from 60 to 1,600 tons. The company also publishes ISO 9001 and IATF 16949 credentials. Compared with the larger industrial groups above, HanKing sits closer to the conventional mold-plus-production model used by many overseas buyers seeking injection molding services in China.
8.ACO Mold ： In-House Mold Making and Injection Molding
ACO Mold has focused on mold making and plastic injection molding since 2000. Its services cover DFM, mold flow analysis, mold design, custom injection molds, injection molding, prototyping, low-volume production, painting, printing, and assembly. The company reports 12 injection molding machines from 80 to 650 tons and produces more than 300 molds annually, with about half remaining in-house for molding production. This makes ACO Mold a relevant option for buyers looking for a China injection mold manufacturer that can keep both tooling and molding under the same supplier.
9. Topworks Plastic Mold — Export-Oriented Project Support
Topworks is strongly oriented toward overseas customers. DFM, mold design, tooling, molding, assembly, and logistics are all presented as part of the same service chain. Its molding presses reportedly range from 50 to 1,600 tons, and the company also works with rapid tooling, insert molding, and two-shot molding. That service mix overlaps closely with what many buyers expect from custom plastic injection molding in China.
10. FOW Mould — Packaging Tooling
FOW Mould has a narrower profile. Buckets, crates, pallets, and other packaging-related molds are a major part of its business. It does not need the same broad process mix as companies targeting electronics or general OEM work. For packaging projects, specialization may be more useful than having a long list of unrelated plastic injection molding services in China.
FAQs About Plastic Injection Molding in China
How Long Does Mold Making and Injection Molding Usually Take in China?
Timing varies with mold complexity, steel selection, cavity count, part requirements, and the number of mold trials needed. Production lead time also depends on order volume and any secondary operations or assembly required, so both tooling and production schedules should be confirmed before the project starts.
Can Chinese Injection Molding Suppliers Provide Samples Before Mass Production?
Yes. Trial samples are normally reviewed before repeat production to check dimensions, appearance, material behavior, mold function, and process stability. If changes are needed, the mold can be adjusted and trialed again. HingTung supports this process from mold trials and inspection through production approval and repeat molding.
Where Are Most Injection Molding Manufacturers Located in China?
Guangdong and Zhejiang are two major manufacturing regions. Shenzhen and Dongguan have established mold, electronics, and precision-manufacturing supply chains, while Huangyan in Zhejiang is particularly well known for mold making.
What Certifications Should I Check When Comparing Chinese Injection Molding Suppliers?
ISO 9001 covers quality management, ISO 14001 covers environmental management, and automotive projects may also require IATF 16949. Certificates should be checked alongside inspection equipment, process control, and production records. Reviewing a supplier’s injection mold design process can also show how quality requirements are addressed before production.
Conclusion
Choosing among plastic injection molding companies in China is not only a price comparison. Tooling control, production capacity, quality systems, engineering support, and communication all influence the result.
Large groups suit major programs, while specialists may be better for focused tooling work. HingTung is a stronger fit when mold development, molding, machining, assembly, and inspection need to stay within one coordinated workflow.