Custom Injection Mold Making & Precision Tooling Services
Turn Complex Part Designs into Flawless High-Volume Production.
At CNMOULDING, we don’t just build injection molds; we manufacture precision, reliability, and global standards. Established in 1997 in Shanghai, China, we bring nearly 30 years of deep manufacturing expertise to global OEMs and tier-1 suppliers. We specialize in high-precision injection molds, multi-cavity tools, unscrewing mechanisms, and complex hot runner systems engineered for the international market.
Technical Capabilities & Machine Specifications
We eliminate guesswork by speaking the language of data and tolerances. Our ITAR-compliant and ISO 13485 certified facilities in Shanghai are fully equipped to meet microns-level requirements.
- Manufacturing Tolerances: Up to ±0.005mm on critical core and cavity components.
- Tooling Standards: 100% compliant with DME, HASCO, and LKM standards, ensuring seamless integration into your local production lines.
- Premium Steel Options: Certified S136 (with heat treatment), NAK80, 718H, H13, and P20. (Material & Hardness certifications provided with every mold).
- Advanced Machinery:
- 5-Axis CNC Machining Centers (High-speed milling for complex geometries)
- Mirror EDM (Electric Discharge Machining for high-gloss, pristine surface finishes)
- Precision Wire-Cutting (Sub-micron accuracy)
- CMM (Coordinate Measuring Machines) for 100% dimensional inspection.
Core Tooling Expertise
Whether your product requires micro-precision or complex internal undercuts, our engineering team optimizes the injection mold for maximum cycle-time efficiency and zero-defect yield:
- Multi-Cavity Molds: High-cavitation tooling balanced for uniform filling and consistent shot-to-shot consistency.
- Unscrewing Molds: Fully automatic mechanical or hydraulic unscrewing mechanisms for precise internal/external threads.
- Overmolding & 2K Tooling: Multi-material injection molds engineered to combine rigid plastics with soft elastomers (TPU/TPE).
- Hot Runner Integration: Expertise in Mold Masters, Yudo, Husky, and Synventive systems for scrap-free, high-efficiency production.
Industries We Serve
- Medical Devices: Tooling produced under ISO 13485 standards, utilizing medical-grade steel for cleanroom injection molding.
- Automotive Components: Durable, robust Class 101 tooling engineered for high-volume interior, exterior, and under-hood components.
- Consumer Electronics: High-aesthetic, tight-tolerance housings requiring flawless surface finishes.
Engineering First: Our DFM Workflow
We do not build a tool until we ensure it is optimized for production. Every RFQ at CNMOULDING triggers a comprehensive Design for Manufacturing (DFM) Review:
- Wall Thickness & Draft Angle Analysis: Preventing sink marks, voids, and ejection failures before steel is cut.
- Gate & Parting Line Optimization: Determining the ideal gate location (valve gate, edge gate, sub-gate) for optimal aesthetics and structural integrity.
- Moldflow Simulation: Analyzing melt fronts, air traps, weld lines, and cooling efficiency to eliminate defects in advance.
Transparency You Can Trust: Tooling Timeline
- Day 1-2: RFQ Receipt, DFM Analysis, and Comprehensive Quote Submission.
- Week 1: Full 3D Mold Design Sign-off (Core/Cavity layout, cooling, and ejection system).
- Week 2-4: CNC, Mirror EDM, Wire-cutting, and Manual Mold Assembly.
- Week 5: T1 Samples. First article inspection (FAI) report and T1 sample videos delivered to you via air courier.
- Week 6: Mold Fine-Tuning & Final Approval.
- Shipment: Molds are treated with anti-rust coating, vacuum-sealed, and packed in sea-freight/air-freight compliant wooden crates along with full 2D/3D tool drawings.
Ready to Bring Your Tooling Project to Shanghai?
Skip the middlemen and trade agents. Partner directly with an experienced, engineer-driven injection mold manufacturer in Shanghai.