Plastic Mold Manufacturing Shenzhen | Precision Injection Mold Maker | JBRplas

Plastic Mold Manufacturing in Shenzhen

JBRplas operates a fully equipped toolroom in Shenzhen, China, producing precision plastic injection molds for clients across North America, Europe, and Asia. Our toolroom combines modern CNC machining centers, EDM technology, and skilled toolmakers with an average of 12 years’ experience to manufacture molds that run reliably at production speed — from the first shot.

We manufacture every mold type, from simple two-plate single-cavity tools to complex multi-cavity hot runner molds with internal thread unscrewing mechanisms. Our quality system ensures every mold is inspected and validated to agreed specifications before shipment.

Mold Manufacturing Capabilities

Machine Equipment

Mold Types We Manufacture

Standard molds

• Two-plate cold runner molds
• Three-plate cold runner molds
• Side-gate and submarine-gate configurations

Hot runner molds

• Single-point and multi-point hot drop
• Hot runner brands: Yudo, Mold-Masters, Husky, Synventive
• Valve gate hot runner for cosmetic parts

Specialty molds

• Insert molds (metal, PCB, thread inserts)
• Two-shot / 2K overmold tooling
• Unscrewing molds for threaded closures
• Collapsible core molds for internal undercuts
• Stack molds for high-volume thin-wall parts
• Gas-assist molds for hollow structural parts

Mold Steel Selection Guide

Surface Finish Options

Mold Validation Process

Every mold goes through a structured qualification process before delivery:

1. Dimensional inspection — CMM verification of all critical cavity and core dimensions against the mold drawing
2. T1 trial — First shots pulled in-house using the production-grade resin
3. Part inspection — First article dimensional report against the part drawing
4. FAI report — Full First Article Inspection report provided to customer
5. Customer approval — Sign-off on T1 samples before production commences
6. PPAP — Production Part Approval Process documentation available on request (Tier 1 automotive clients)

Tooling Warranty

All JBRplas molds are warranted against manufacturing defects for the full guaranteed shot life. If a mold fails to meet the agreed shot count due to workmanship issues, we repair or replace the affected components at no charge.

Mold Storage & Maintenance

After production, JBRplas stores customer molds in temperature- and humidity-controlled storage at no charge for the duration of the production program. Preventive mold maintenance is performed after every 50,000 shots as standard.

Frequently Asked Questions

What is your typical T1 lead time? Standard single-cavity molds: 18–22 business days from design approval. Multi-cavity or hot runner molds: 25–35 business days. We provide a specific committed date at the time of order.

Can you match an existing mold from another supplier? Yes. We can reverse-engineer from a reference part or existing mold drawings. A dimensional scan of the reference part is recommended to establish a baseline.

Do you export molds to customers? Yes. We regularly export molds to the US, Europe, and Australia. Molds are exported in wood crates with full rust-prevention coating. All export documentation (commercial invoice, packing list, HS code) is included.

Request a mold manufacturing quote →