How to Import Injection Molds from China: A Complete Guide (2026)

Sourcing injection molds from China can save 30-60% compared to domestic mold makers in North America or Europe. But the process has real risks if you do not know what to look for. This guide covers everything from supplier selection to final delivery, written from the perspective of a mold engineering team based in Shenzhen.

1. Understand What Kind of Supplier You Are Dealing With

Not all "mold manufacturers" in China are the same. They fall into three categories:

Direct factory — Owns the machines. Lowest price, but you deal with language barriers and no independent QC. If the factory makes a mistake, there is no one to catch it.
Trading company — Sources from multiple factories. Adds margin without adding engineering value. Quality is inconsistent because they do not inspect.
Engineering management company (like Peifeng Precision) — In-house engineers handle DFM, mold design review, and QC at every stage. Manufacturing is done by audited factory partners selected for your specific mold type. You get competitive pricing plus independent quality control.

2. Prepare Your Design Files Properly

The most common reason for mold delays is incomplete or ambiguous design data. Send these:

3D CAD file — STEP (.step, .stp) is the industry standard. IGES and Parasolid (.x_t) also accepted.
2D drawing with tolerances — Critical dimensions must be marked with tolerances. The factory uses this for CMM inspection.
Material specification — Exactly what plastic or alloy, including grade and filler percentage. Glass-filled materials require harder steel.
Surface finish requirement — SPI (US), VDI (Europe), or sample comparison standard. This affects steel choice and polishing time.
Target volume and mold life — 10,000 shots per year needs different tooling than 500,000.

3. The DFM Review Is Your Best Friend

Always insist on a free DFM (Design for Manufacturability) review before steel is cut. A good DFM report will flag:

Undercuts and draft angle issues
Wall thickness problems causing sink marks or warpage
Gate location optimization for fill balance
Ejector pin placement to avoid part damage
Cooling channel layout for cycle time optimization

At Peifeng, we provide a free DFM review with every quote. It typically catches 3-7 issues per project that would have caused rework or scrap.

4. Know Your Mold Base Standard

Your mold base should match your market. If your molding facility is in Germany, specify HASCO. In the US, DME. In Asia, LKM or MISUMI. This ensures spare parts and maintenance compatibility. Your China mold maker must use the correct standard — confirm it in the purchase order.

5. Quality Control: Four Inspection Gates

Quality should be checked at four stages, not just at the end:

Incoming steel inspection — Spectrometer check and hardness verification to confirm the correct grade was purchased.
In-process inspection — Checks at each machining milestone: roughing, finishing, EDM, polishing.
Mold trial (T0 sample) — Sample parts measured on CMM with full dimensional report. This is when you approve the mold.
Final pre-shipment inspection — Comprehensive checklist: cooling circuit pressure test, ejector function, surface finish, documentation package.

6. Payment Terms That Protect You

Standard terms: 50% deposit to start, 50% before shipping — after you have reviewed and approved photos, video, sample parts, and the full CMM report. Never pay 100% upfront. A reputable mold maker will offer terms that protect both sides.

7. Shipping and Import

Your mold should arrive ready to run. The supplier should handle: rust preventive treatment, vacuum sealing of critical surfaces, reinforced export-grade plywood crating, export documentation, customs clearance, and freight (sea or air). Door-to-door delivery should be available. You should receive tracking the day it ships.

8. Red Flags to Watch For

No DFM review offered, or DFM done by salesperson instead of an engineer
Unusually fast lead time quote (quality molds take 4-8 weeks)
No in-process photos or updates during manufacturing
Unwillingness to sign an NDA before receiving design files
No CMM report with sample parts
Cannot name their mold base standard

Take the Next Step

Send your CAD file or part drawing through our RFQ form. Our engineers provide a free DFM review and detailed quote within 24 hours. No obligation, and we sign an NDA before receiving any design files.