CUSTOM PLASTIC INJECTION MOLDING FROM PROTOTYPE TO PRODUCTION
Custom Plastic Injection Molding Solutions
From product design and DFM analysis to precision mold building and full-scale production — we deliver end-to-end injection molding services with uncompromising quality.
MOLDS / YEAR
YEARS EXPERIENCE
INJECTION MACHINES
Your One-Stop Partner from Concept to Mass Production
SunPeak helps product companies, OEMs and engineering teams turn plastic part designs into stable, production-ready components. Whether you have completed CAD files, an early-stage concept or an existing mold that needs to be transferred, our engineers can support the next stage of your project
- Product design, reverse engineering and DFM
- Injection mold design and manufacturing
- Custom plastic injection molding
- Insert molding, overmolding and 2K molding
- Surface finishing and secondary processing
- Product assembly, quality control and packaging
Precision Molding Technologies We Master
From standard injection molding to advanced multi-material processes, we have the technology and expertise to bring your most complex designs to life.
Custom Plastic Injection Molding
Custom injection molding for functional and appearance parts using engineering thermoplastics.
Insert Molding
Metal and plastic integration in a single shot. Ideal for connectors, threaded inserts, and structural reinforcement.
Overmolding & 2K Molding
Multi-material molding for soft-touch grips, seals, and dual-color components with rotary table technology.
Production & Quality Support
Full-scale production with inline inspection, SPC monitoring, and comprehensive quality documentation.
Complete Engineering Support at Every Stage
Our engineering team works alongside you from initial concept through production, ensuring optimal design, material selection, and manufacturability.
Product Design, Reverse Engineering & DFM
3D scanning, CAD modeling, and design-for-manufacturability analysis to optimize your part before tooling investment.
Rapid Prototyping & 3D Printing
Validate form, fit, and function with fast prototypes — 3D printing, CNC machining, and vacuum casting in 3–7 days，Customize content
Injection Mold Design & Mold Building
Custom mold design and fabrication with advanced CAD/CAM, MFA simulation, and precision machining to ±0.001mm.
Material Selection & Engineering Support
Expert material recommendations from 50+ engineering plastics, with compliance documentation and supplier support.
Trusted by Manufacturers Across 7 Industries
From automotive electronics to medical devices, our injection molding solutions serve diverse industries with specialized requirements.
Scalable Production Backed by Rigorous Quality Control
From low-volume pilot runs to millions of parts per year, our production floor combines automated molding cells with comprehensive quality systems to ensure every part meets your specifications.
SPC Monitoring
Real-time statistical process control on all critical dimensions
Inline Inspection
Automated vision systems and CMM measurement
ISO 9001 & IATF 16949
Dual-certified quality management systems
Full Traceability
Lot-level tracking from resin to shipment
MOLDS PER YEAR
INJECTION MACHINES
PRODUCTION FACILITY
MACHINING PRECISION
The Partner That Manufacturers Trust
We combine decades of mold-making expertise with modern engineering tools to deliver injection molding solutions that scale with your business.
Industry Expertise
Deep specialization in automotive-grade molding with IATF 16949 compliance, serving Tier 1 and Tier 2 suppliers worldwide.
Design-Driven Approach
Our engineers don’t just build molds — they optimize your part design for manufacturability, reducing costs and improving quality.
Quality Without Compromise
From medical-grade cleanroom molding to automotive PPAP documentation, we meet the most demanding industry standards.
Get Your Injection Molding Quote
Send us your project details — our engineers will respond within 24 hours with a detailed proposal.