Manufacturing Excellence Since 2015
Changzhou Semyuan Mold Co., Ltd. is a leading manufacturer of automotive injection molds, serving global OEMs and tier-1 suppliers with precision, quality, and reliability.
Your Trusted Automotive Mold Partner
Founded on September 25, 2015, Semyuan is located in Changzhou National High-tech Zone, Jiangsu Province. With 65+ employees (30% with bachelor's degree or above), we specialize in automotive lighting molds, exterior trim molds, and precision tooling fixtures.
With over a decade of experience in mold design and manufacturing, we have established ourselves as a preferred supplier for leading automotive brands including Valeo, Marelli, and ANLI.
Our commitment to "Integrity, Professionalism, and Quality" drives everything we do, as we strive to become a world-class automotive plastic mold supplier.
Complete Organizational Structure
Our comprehensive departmental structure ensures professional handling of every aspect of your project.
Expert Engineering Team
Our Machining and Manufacturing departments comprise 30+ technical professionals, including 20+ engineers with over 10 years of experience. Our core team members come from top domestic automotive lighting mold companies, bringing world-class expertise to every project.
From Design to Global Delivery
Complete end-to-end solutions for automotive injection mold manufacturing.
Design Software
Industry-leading CAD/CAM tools for precision engineering
AutoCAD
CATIA P3 V5
SolidWorks
Moldflow
UG NX 10.0
Design Cases
Professional 3D mold designs for automotive lighting
Lens Mold Design
Lens Mold Detail
Lens Mold Section
RL Housing Design
RL Housing Detail
RL Housing Section
Light Guide Design
Light Guide Detail
Light Guide Section
Main Bezel Design
Main Bezel Detail
Main Bezel Section
Mold Flow Analysis
Manufacturing Power
20,000+ sqm facility with 120+ molds per year capacity
5-Axis CNC 1
5-Axis CNC 2
5-Axis CNC 3
5-Axis CNC 4
CNC Machine 1
CNC Machine 2
CNC Machine 3
CNC Machine 4
Graphite CNC 1
Graphite CNC 2
EDM Machine 1
EDM Machine 2
Workshop View 1
Workshop View 2
Quality Control
ISO 9001 certified with comprehensive inspection
CMM Measurement
Precision Testing
Our Quality Promise
Global Delivery
One-stop worldwide sourcing with flexible shipping
Ready to Start Your Project?
From initial design to global delivery, we provide complete mold manufacturing solutions.
Get a Free QuoteTrusted by Industry Leaders
We are the trusted mold supplier for leading automotive lighting manufacturers worldwide.
Quality Assurance
Quality is at the core of everything we do. Our ISO 9001 certified quality management system ensures consistent excellence throughout the manufacturing process.
ISO 9001 Certified
Quality management system certification
CMM Inspection
Precision coordinate measuring
100% Testing
Every mold thoroughly tested
Safe Delivery
Professional packaging & shipping
Ready to Partner with Us?
Contact our team to discuss your automotive mold requirements and discover how Semyuan can deliver precision solutions for your projects.