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Injection Molding Parts

Precision Injection Molding Services — Custom Plastic Parts Manufactured to Your Specifications

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.

Injection molding machine at SOMI custom parts facility

Why SOMI for Custom Injection Molding

With years of experience in custom plastic part manufacturing, SOMI delivers injection molding solutions that meet demanding requirements.

Mold Design Expertise

In-house mold design for complex geometries, multi-cavity, and family molds with mold flow simulation.

Material Diversity

ABS, PC, PP, PA, POM, PEEK, LSR, TPE and more engineering and specialty materials supported.

Precision Tolerances

Holding tight tolerances of ±0.05mm for critical dimensions with consistent repeatability.

Multi-Process Capability

Insert molding, overmolding, bi-color, and LSR all under one roof for integrated solutions.

Quality Assurance

In-process monitoring, dimensional inspection, material testing, and full traceability for every batch.

Global Service

Trusted by brands, wholesalers, and OEMs worldwide. Fast mold development and reliable production.

Our Injection Molding Process: From Concept to Production

A comprehensive process ensuring every custom plastic part meets your exact specifications.

Design Review

DFM and mold flow simulation

Mold Fabrication

Precision machining and assembly

Mold Trial

Sampling and process optimization

Production

Automated injection with QC

QC and Ship

Inspection, packaging, delivery

Custom Injection Molded Parts We've Delivered

Real custom injection molding cases across diverse industries.

Automotive injection molded parts by SOMI
Case Study

Automotive Components

Interior trim, connectors, under-hood parts

Medical injection molded parts by SOMI
Case Study

Medical Device Parts

Handles, housings, sterile packaging

Consumer electronics injection molded parts by SOMI
Case Study

Consumer Electronics

Enclosures, seals, internal components

Industrial injection molded parts by SOMI
Case Study

Industrial Equipment

Gaskets, seals, dampeners, LSR parts

Start Your Custom Injection Molding Project Today

Share your design files. Our engineering team will provide mold design recommendations, material selection, and competitive pricing.

Send Your Inquiry Now

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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.

Contact Our Team