CNC Machining --
Custom CNC Machined Parts
from Vietnam & China
From single prototypes to full-scale production -- tolerances as tight as ±0.005mm, sourced from vetted factories across Vietnam and China.
What DEWIN Delivers
Precision CNC Parts,
Engineered Before They're Quoted
Our factory network covers 3-axis, 4-axis, and 5-axis CNC machining -- turning, milling, and combined turn-mill centers -- across vetted facilities in Vietnam and China. We hold tolerances down to ±0.005mm and surface roughness to Ra 0.5. Parts range from 0.01 kg micro-components to 500 kg structural housings up to 2000 × 1000 × 800mm.
Every RFQ goes through a DFM review before tooling. Our engineers flag tolerance conflicts, undercuts, and process-incompatible features before a single chip is cut -- the issues that cause sample rejection loops and six-week delays at other suppliers.
We assign a dedicated quality engineer on-site during production, not just at final inspection. Full PPAP documentation -- FAI, dimensional report, material certs, and COA -- ships with every order. No minimum order quantity by piece count; we quote on total contract value. Payment terms up to O/A Net 90 days.
Vetted Factory Network
Vietnam + China dual-source. QCLDM-scored factories matched to your project spec.
On-Site QE During Production
Dedicated quality engineer monitors in-process, not just final inspection.
Full PPAP Package
FAI, dimensional report, material certs, MSA, PFMEA -- complete documentation on every order.
Flexible Payment Terms
Up to O/A Net 90 days. No piece-count MOQ -- we quote on total contract value.
DFM Review Before Tooling -- No Extra Charge
Our engineers review your drawings for tolerance conflicts, undercuts, and process issues before quoting. Clients avoid two rounds of sample rejection and 4-6 weeks of lost lead time on average.
Prototype to Mass Production
From Prototype to Mass Production --
One Partner, Zero Gaps.
DEWIN manages the full arc -- from first-article prototypes through bridge production runs to stable, high-volume output -- using the same factory and the same quality engineer throughout. No re-qualification, no handoff risk.
Functional First Samples
- Real production materials -- not 3D-printed substitutes
- 7-15 business days typical turnaround for first samples
- DFM review included at no extra cost
Bridge Production
- Approved samples locked in -- same factory, same setup
- Controlled volume ramp to validate process stability
- PPAP package completed before mass production release
Stable Volume Output
- 30-45 day production lead time from PO
- Same QE oversight -- no handoff to a new team
- Door-to-door logistics with full documentation
DFM catches problems before they cost you
Our engineers have identified critical tolerance conflicts in client drawings before production started -- saving an average of two sample rejection rounds and 4-6 weeks of lead time per project.
Technical Specifications
CNC Machining Capabilities
| Specification | Value |
|---|---|
| Tolerance | ±0.005mm |
| Max Part Dimensions | 2000 × 1000 × 800mm |
| Axis Capability |
3-Axis
4-Axis
5-Axis
|
| Surface Roughness | Ra 0.5 |
| Part Weight Range | 0.01 - 500 kg |
| Prototype Lead Time | 7-15 business days |
| Production Lead Time | 30-45 days from PO |
ISO 9001:2015 Certified
All machined parts are produced at ISO 9001:2015 certified facilities. Bureau Veritas audited. Full PPAP package included with every production order.
Material Selection
Materials We Machine
Steel
- Carbon Steel
- Alloy Steel
- Tool Steel
Stainless Steel
- SS304
- SS316
- SS303
Aluminum
- 6061
- 7075
- 2024
Brass & Bronze
- Brass (C360, C260)
- Bronze (C932, C954)
Titanium
- Ti-6Al-4V (Grade 5)
- CP Titanium (Grade 2)
Engineering Plastics
- POM
- PEEK
- Nylon (PA6, PA66)
- PTFE
Post-Processing
Surface Treatment Options
Applications
Industries We Serve
Automotive & Motorcycle
Shock absorber components, transmission housings, engine brackets
Consumer Electronics
Smart lock components, device enclosures, heat sinks, connector housings
Industrial Equipment
Pump bodies, valve components, gearbox housings, precision shafts
Energy & Power
Turbine components, high-temperature bushings, emission control parts
Construction & Agriculture
Hydraulic cylinder parts, wear-resistant pins, structural connectors
Medical Devices
Surgical instrument components, implant fixtures, diagnostic device housings
Factory & Parts
CNC Machining in Action
Get Started
Ready to Source CNC Machining Parts?
Send us your drawing -- we'll review your design, match you with the best factory, and quote within 24 hours.
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