Automotive Injection Molding Manufacturer in China for OEM Plastic Parts

We are a professional automotive injection molding manufacturer in China, providing high-precision plastic parts for OEMs and Tier 1 suppliers worldwide.
From DFM analysis and mold design to mass production, we deliver consistent quality, tight tolerances, and fast lead times.
With extensive experience in automotive projects, we help reduce defects, improve efficiency, and ensure stable long-term supply.

Automotive Injection Molding Services for OEM & Tier 1 Suppliers
We offer complete automotive injection molding services tailored to meet strict industry requirements. Our engineering-driven approach ensures every component meets performance, durability, and dimensional standards.
Our services include:
- Custom automotive injection molding
- Injection mold design and manufacturing
- DFM (Design for Manufacturability) analysis
- Insert molding and overmolding
- Mass production with strict quality control
Common Challenges in Automotive Plastic Injection Molding
Automotive plastic parts must meet extremely high standards. Common manufacturing challenges include:
- Warpage and deformation in complex geometries
- Sink marks affecting appearance and structural integrity
- Dimensional instability impacting assembly
- Inconsistent quality in high-volume production
- Long tooling lead times delaying product launches

Automotive Injection Molding Parts | CNMOULDING China
Our Automotive Injection Molding Capabilities
We solve these challenges through advanced engineering and precision manufacturing:
- High-precision mold manufacturing with tolerances up to ±0.02mm
- Advanced Moldflow analysis to optimize part design
- Multi-cavity molds for efficient mass production
- Insert molding and overmolding for functional integration
- Stable production processes ensuring consistent quality
We work with automotive-grade materials including:
- PA66 GF (glass-filled nylon)
- PBT
- ABS
- PC
- Other engineering plastics
Automotive Plastic Parts We Manufacture
We produce a wide range of automotive plastic components:
Interior Parts
- Dashboard components
- Trim panels
- Center consoles
Exterior Parts
- Grilles
- Covers
- Housings
Functional Components
- Brackets
- Connectors
- Structural parts
Under-the-Hood Parts
- High-temperature resistant components
- Engine-area plastic parts
Automotive Quality Standards (IATF 16949 & PPAP)
Quality is critical in automotive manufacturing. We follow strict quality management systems to ensure every part meets customer requirements.
Our quality system includes:
- IATF 16949-compliant processes
- PPAP (Production Part Approval Process) documentation
- APQP project management
- First article inspection (FAI)
- In-process and final quality inspection
We ensure full traceability from raw materials to finished products.
Injection Molding Equipment & Production Capacity
Our modern manufacturing facility is equipped to handle both small and large-volume production:
- Injection molding machines from 100T to 1500T
- CNC machining, EDM, and precision mold tooling
- Mold polishing and surface finishing
- Automated production for stable output
Typical lead times:
- Mold manufacturing: 15–25 days
- Mass production: depending on order volume
Our Automotive Injection Molding Process
We follow a structured and efficient production process:
- RFQ and technical review
- DFM analysis and optimization
- Mold design
- Mold manufacturing
- T1 sample validation
- Mass production
- Quality inspection and delivery
This ensures every project is completed on time and meets specifications.
Why Choose Us as Your Automotive Injection Molding Supplier
- Strong experience in automotive industry projects
- Stable and consistent product quality
- Fast response and engineering support
- Competitive pricing with reliable delivery
- Long-term cooperation with global customers
FAQ – Automotive Injection Molding
What materials are used in automotive injection molding?
We use engineering plastics such as PA66 GF, PBT, ABS, and PC, which meet automotive strength, heat resistance, and durability requirements.
What is PPAP in automotive injection molding?
PPAP (Production Part Approval Process) ensures that the manufacturing process consistently produces parts that meet customer specifications.
What is the lead time for automotive injection molds?
T1 samples are typically delivered within 15–25 days depending on part complexity.
Do you support OEM automotive projects?
Yes, we provide full support for OEM and Tier 1 suppliers, from design optimization to mass production.
Request a Quote for Automotive Injection Molding
Start your automotive project with a reliable injection molding manufacturer.
Send us your 2D/3D drawings today and get:
- Free DFM analysis
- Fast quotation within 24 hours
- Professional engineering support







