- Prototypes
- EV & battery parts
- Custom body parts
- Lighting & lenses
- Replacement parts
- Jigs & fixtures
- Commercial vehicle parts
- Bumpers
- Legacy / obsolete parts
- E-bike & scooter parts
- Dashboard & steering parts
- Engine parts
Applications
Which automotive projects we take on
Automotive customers come to us with prototypes, EV and battery hardware, structural production parts and tooling. Typical priorities are tight tolerances on critical assemblies, certified, wear-resistant materials, and quality control through on-machine inspection and CMM.
Why make automotive parts with Tongyong
From one prototype to production runs
We provide automotive-industry customers with rapid prototyping and production machining — CNC milling, turning, 5-axis and EDM — to bring new product concepts to life. Our engineers help you get the best outcome from your design before a chip is cut.
The automotive industry needs precision metal parts with tight tolerances and reliable quality control. We machine production-grade material so prototypes validate fit, function and finish, then scale to repeatable batches.
ISO 9001 certified quality
A certified management system that guarantees top quality in an industry that demands rigorous consistency and quality control.
Volume production capacity
We fulfil orders of virtually any size, from one-off prototypes to repeatable production batches of automotive parts.
Range of services
Multi-axis CNC machining, turning, Swiss, EDM and finishing — a broad range of automotive technologies under one roof.
Short lead times
Our machines and partner network let us fulfil orders quickly, no matter the quantity or complexity.
Skilled & experienced
We have machined automotive parts for many years and know how to get the best results from your designs.
Easy quotation system
Upload your design and we'll quickly provide a fast and accurate quotation for the project.
Processes
CNC Machining Processes We Support
CNC Milling
Multi-axis milling for housings, brackets, plates and complex geometries with reliable dimensional control.
CNC Turning
Precision turning for shafts, sleeves, bushings and rotational components with controlled dimensions and surface finishes.
5-Axis CNC Machining
Complex multi-face components machined with advanced 5-axis capabilities for challenging geometries.
Micromachining
Precision machining for miniature components with micro features, fine details and tight dimensional requirements.
EDM Machining
High-precision machining for hardened materials, intricate profiles and complex features.
Surface Finishing
Enhance part appearance, corrosion resistance, and surface performance with anodizing, plating, coating, and other finishing solutions.
Common questions
Automotive machining FAQs
Can you support PPAP documentation and corrective action requests?
We can support the PPAP process with dimensional inspection reports and material certifications, and provide corrective action documentation when needed. Full PPAP Level 3 packages should be discussed during quoting to confirm what we can supply.
What tolerances and process capability (Cpk) can you achieve for automotive parts?
We can hold tight tolerance machining suitable for automotive components — exact capability, including achievable Cpk, depends on part geometry and material. Share your drawing's critical dimensions and we'll confirm what's realistic for your part.
Can you handle automotive-approved plating and finishing?
Yes, we offer automotive approved plating along with other surface finishing services including passivation and black oxide. Let us know the specific automotive finish spec you need, and we'll confirm compatibility.
Do you support APQP for new automotive programs?
We can support parts of the APQP process such as dimensional verification and material certification, though a full formal APQP program should be scoped with us directly, as automotive core tools implementation varies by supplier capability.