Custom Plastic Injection Molding Service in China
HC-Mold molds custom plastic parts in Chang'an, Dongguan, from 500-piece launch runs to 500,000+ parts per month. Tooling, molding, finishing and assembly happen in one plant under ISO 9001:2015, and every shipment leaves with a full inspection report.
Injection molding capabilities
- Volume
- 50 to 500,000+ parts per month
- Typical MOQ
- 500–1,000 parts per run; smaller quantities via rapid tooling or vacuum casting
- Processes
- Thermoplastic injection molding, insert molding, overmolding, two-shot (2K) molding, liquid silicone rubber (LSR) molding
- Materials
- ABS, PC, PP, PE, PA6 / PA66 incl. glass-filled, PS, POM, PMMA, TPE / TPU, LSR
- Tooling
- Molds built in-house, or production on your existing mold
- Finishing
- SPI polish or texture, painting, screen printing, laser engraving, vacuum plating
- Secondary
- Ultrasonic welding, insert installation, sub-assembly, export packing
- Quality
- ISO 9001:2015, SPC monitoring, IQC / IPQC / OQC, first article check, 3D measurement report
- Delivery
- 98% on-time delivery
What to send for a molding quote
- 3D files (STEP, IGES, SolidWorks) and a 2D PDF with critical tolerances
- Resin grade or required properties, color and surface finish
- Quantity per order and annual volume
- New mold, or an existing mold to transfer
We sign an NDA before any file review. Complete packages get a reply within 12 hours and a quote within 24 hours.
Injection molding services
The molding process is chosen in the DFM review to fit the part, the material and the volume.
Production injection molding
Thermoplastic parts from single-cavity and multi-cavity molds, with process windows locked after first article and monitored by SPC.
Insert molding
Threaded inserts, pins and metal contacts are placed in the mold and encapsulated, so the part leaves the press ready to assemble.
Overmolding
A soft TPE or TPU layer molded over a rigid substrate for grips, seals and impact protection. See overmolding vs insert molding.
Two-shot (2K) molding
Two materials or two colors molded in one cycle with a two-shot tool, for bonded soft-touch and multi-color parts without secondary assembly.
LSR injection molding
Liquid silicone rubber parts such as seals, gaskets, keypads and soft-touch components that need heat resistance and flexibility.
Low-volume injection molding
Rapid tooling in about 15 days for pilot builds and launch quantities before production steel. Compare rapid tooling vs a production mold.
Injection molding materials
Common choices are below; we confirm the grade in the DFM review against strength, temperature, chemical exposure, cosmetics and cost.
| Material | Typical parts | Why it is chosen |
|---|---|---|
| ABS | Housings, enclosures, consumer products | Good cosmetics, easy to paint and plate, low cost |
| PC | Transparent covers, lenses, tough housings | Impact strength and clarity |
| PP | Containers, living hinges, caps | Chemical resistance, fatigue resistance, low density |
| PE (HDPE / LDPE) | Containers, drain and fluid parts | Chemical resistance, toughness at low temperature |
| PA6 / PA66 (incl. glass-filled) | Brackets, structural and under-hood parts | Strength and heat resistance; glass fiber adds stiffness |
| POM (acetal) | Gears, clips, sliding parts | Low friction, dimensional stability |
| PMMA (acrylic) | Light guides, display windows | Optical clarity and scratch resistance |
| TPE / TPU | Grips, seals, overmolded layers | Soft touch and elasticity |
| LSR | Seals, gaskets, keypads | Heat resistance, flexibility, durability |
More detail: plastic material selection for injection molding
Examples of injection molded parts
Parts of the type we mold. Full list in the product catalog.
Custom Injection Molded Plastic Parts in Mixed Colors
Small Boat Components and Fittings
EVA Injection Molded Clogs
Technical Ceramic Parts
Set-Top Box Plastic Enclosure
CNC Turned Stainless Steel Shaft
Injection Molded Consumer and Automotive Plastic Parts
Ski Boot Shell Plastic Parts
From approved mold to repeat orders
The same plant builds or receives the mold and runs every production lot, so samples, process settings and inspection methods stay consistent.
DFM & tooling
Free DFM review, then a new mold built in-house or your existing mold checked and transferred.
Samples & first article
T-samples and a first article dimensional check before production is released.
Production
Process window documented and monitored by SPC, with IPQC checks during the run.
Inspection & shipment
OQC, a full inspection report with the goods, and packing for international freight.
Quality control on every order
Material certificate on arrival, first article dimensional check, 3D coordinate measurement and a full inspection report shipped with the goods. Non-conforming parts are re-made free of charge. See inspection and testing.
Finishing and assembly
Painting, screen printing, laser engraving, vacuum plating, ultrasonic welding, insert installation and sub-assembly are quoted with molding, so parts arrive ready for your line. See sub-assembly and finishing.
Injection molding cost
Part price is driven by resin, part weight, cycle time, cavity count and finishing, plus the share of tooling cost per part. Higher volumes justify more cavities or a hot runner, which lowers the price per part.
- Injection molding cost per part: material, cycle time and tooling share
- How much does an injection mold cost?
- MOQ for CNC and injection molding in China
Industries we mold parts for
Consumer and household products, electronics housings and enclosures, medical device enclosures and diagnostic instrument parts, automotive components and industrial sensor housings, for brand owners and OEM engineering teams.
Injection molding FAQ
What is the minimum order quantity for injection molding?
Injection molding typically starts at 500–1,000 parts per run. For smaller quantities we recommend rapid tooling, vacuum casting or CNC machining.
How long does injection molding take?
A new mold takes about 15 days for rapid tooling or 25–35 days for a standard mold. Production lots typically ship in 15–35 days depending on quantity and finishing.
Can you mold parts using our existing mold?
Yes. We check the mold on arrival, run samples and a first article check, and then release production.
Which plastics can you mold?
Common resins include ABS, PC, PP, PE, PA6 / PA66 (including glass-filled), PS, POM, PMMA, TPE / TPU and liquid silicone rubber. Tell us the required properties if you have not chosen a grade.
Do you offer insert molding, overmolding, two-shot and LSR molding?
Yes. All four are available alongside standard thermoplastic molding, with the molds built in-house.
What quality documents do I receive?
Every order ships with a full inspection report, including a 3D dimensional measurement report. Material certificates and first article reports are available on request.
Will you sign an NDA before I send drawings?
Yes. A confidentiality agreement is signed before any file review. See IP protection and NDA.
How is the part price calculated?
From resin, part weight, cycle time, cavity count, finishing and packing. Send a 3D file and annual volume for a quote within 24 hours on a complete package.
Get an injection molding quote
Free DFM · NDA before file review · reply ≤12h · quote ≤24h on complete RFQ · ISO 9001:2015