Injection Molding Parts
At SOMI, we specialize in custom injection molding for non-standard plastic and silicone parts. Every product displayed is a real custom case manufactured for our clients — proof of our mold design expertise, material knowledge, and quality commitment. From prototype to production, we bring your plastic part designs to life. With years of experience in custom plastic part manufacturing, SOMI delivers injection molding solutions that meet demanding requirements. In-house mold design for complex geometries, multi-cavity, and family molds with mold flow simulation. ABS, PC, PP, PA, POM, PEEK, LSR, TPE and more engineering and specialty materials supported. Holding tight tolerances of ±0.05mm for critical dimensions with consistent repeatability. Insert molding, overmolding, bi-color, and LSR all under one roof for integrated solutions. In-process monitoring, dimensional inspection, material testing, and full traceability for every batch. Trusted by brands, wholesalers, and OEMs worldwide. Fast mold development and reliable production. A comprehensive process ensuring every custom plastic part meets your exact specifications. DFM and mold flow simulation Precision machining and assembly Sampling and process optimization Automated injection with QC Inspection, packaging, delivery Real custom injection molding cases across diverse industries. Interior trim, connectors, under-hood parts Handles, housings, sterile packaging Enclosures, seals, internal components Gaskets, seals, dampeners, LSR parts Share your design files. Our engineering team will provide mold design recommendations, material selection, and competitive pricing.Precision Injection Molding Services — Custom Plastic Parts Manufactured to Your Specifications

Why SOMI for Custom Injection Molding
Mold Design Expertise
Material Diversity
Precision Tolerances
Multi-Process Capability
Quality Assurance
Global Service
Our Injection Molding Process: From Concept to Production
Design Review
Mold Fabrication
Mold Trial
Production
QC and Ship
Custom Injection Molded Parts We've Delivered
Automotive Components
Medical Device Parts
Consumer Electronics
Industrial Equipment
Start Your Custom Injection Molding Project Today
Frequently Asked Questions About Injection Molding
What is the typical lead time for mold fabrication?
Simple molds take 15-25 working days. Complex multi-cavity molds may require 30-45 working days.
What is the minimum order quantity?
MOQ varies by part complexity. We accommodate runs from 500 pieces up to millions annually.
What plastic materials do you support?
ABS, PC, PP, PE, PA, POM, PEEK, PMMA, TPE, TPU, Liquid Silicone Rubber, and more.
Can you help with mold design?
Yes. Our team provides DFM analysis, mold flow simulation, and design optimization recommendations.
Do you offer prototyping before production?
Yes. We produce prototype parts via CNC or 3D printing for validation before committing to production tooling.
Explore Our Manufacturing Capabilities
Beyond injection molding, SOMI offers a full suite of precision manufacturing services.
Ready to Start Your Injection Molding Project?
Contact our engineering team for a free consultation and quote.
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