High-precision CNC milling services for custom parts, prototypes, and production components.
We provide 3 axis, 4 axis and 5 axis CNC machining services with tight tolerance control, fast lead time, and full inspection reports.
Precision CNC Machining Experience
Machinery and equipment
Manufactured Parts
CMM Quality Inspection
9001:2015 Certified 14001:2015 Certified
Located in Dongguan, China, YUANYI provides high-precision CNC milling services China with in-house manufacturing capabilities, supporting prototypes, low-volume production, and full-scale industrial parts.
As a reliable supplier of CNC milling China, we operate advanced 3-axis, 4-axis, 5-axis, and gantry CNC machines to machine complex geometries with tight tolerance control up to ±0.005 mm.
Every part is produced and inspected in-house to ensure consistent quality, fast turnaround, and engineering-level accuracy for global customers.
YUANYI provide high-precision CNC milling services with strict process control, supporting a wide range of part sizes, materials, and tolerances. All parts are fully inspected to ensure consistent quality from prototype to production.
| Item | Specification |
|---|---|
| Tolerance | ±0.005 mm (standard machining capability) |
| 3-Axis CNC Milling Max Size | 1100 × 650 × 500 mm |
| 4-Axis CNC Milling Max Size | 1200 × 700 × 550 mm |
| 5-Axis CNC Milling Max Size | 600 × 910 × 450 mm |
| Gantry CNC Milling Capacity | 2300 × 1300 × 600 mm |
| Materials | Aluminum, Stainless Steel, Titanium, Brass, Copper, POM, Nylon, PEEK, Acrylic |
| Surface Finishing | Anodizing, Sandblasting, Polishing, Powder Coating, Black Oxide, Electroplating |
| Lead Time | Prototype: 3–5 days / Batch production: 5–30 days |
| Quality Control | 100% Full Inspection, CMM, 2D Measurement, Inspection Reports |
Over the years, we’ve worked on a wide variety of custom CNC milling parts across different industries. Some are simple functional components, while others involve complex shapes and tight tolerance requirements.
Each part is produced with careful attention to machining details to ensure consistent quality, accuracy, and performance.
Our engineers have extensive CNC machining experience and review every drawing before production.
Stable machining processes ensure high accuracy for both prototypes and production parts.
We provide quick feedback and DFM suggestions to improve manufacturability.
All parts are fully inspected with CMM and 2D measuring equipment before shipment.
We support prototypes, small batches, and full production runs flexibly.
We ship CNC machined parts to aerospace, medical, robotics, and industrial clients worldwide.
When requesting quotes, many customers ask, “Why is there such a big difference in price for the same part?” In fact, the cost of CNC machining is not fixed; it varies depending on the part’s design, material, and machining requirements. Below are some of the most common factors that influence the cost.
Different materials vary in machinability; for example, titanium alloys and stainless steel are more difficult to machine than aluminum, which increases costs.。
The more complex the structure, the more machining steps are required, and the higher the time and setup costs will be.
The tighter the tolerance (e.g., ±0.005 mm), the higher the requirements for machining control and inspection.
The cost per unit is higher for single items or small batches; mass production can lower the unit price.。
Post-processing steps such as anodizing, sandblasting, and electroplating will result in additional costs and longer lead times.
Send us your CAD file or drawing, and our engineering team will review your project and provide a fast quotation with manufacturability feedback.
Upload Your DrawingReview drawings, tolerance requirements, materials, and machining feasibility before production starts.
Monitor critical dimensions and machining conditions during production to maintain stable quality.
Verify finished parts using CMMs, micrometers, height gauges, and other precision measuring equipment.
Dimensional inspection reports and material certificates can be provided based on project requirements.
View our full quality control system, testing process, and inspection capability.
Send STEP, STL or PDF drawings for review.
Receive pricing and engineering feedback within 24 hours.
CNC machining with tight tolerance control and stable process.
Full inspection before shipment with global delivery support.
We provide CNC milling services for a wide range of industries, producing precision components used in both functional prototypes and production environments. Our parts are widely applied in high-demand engineering fields requiring accuracy, durability, and consistency.
We usually work with a variety of metals and engineering plastics in our CNC milling projects. Different materials behave differently during machining, so we choose suitable cutting strategies based on the part structure and requirements.
From aluminum and stainless steel to engineering plastics like POM and PEEK, each material is processed with attention to stability, accuracy, and surface quality.
6061, 7075, and 5052 are widely used for lightweight precision parts, housings, brackets, and automation components.
304, 316, and 17-4PH are suitable for durable and corrosion-resistant parts with stable machining performance.
Ti-6Al-4V and Grade 2 are often selected for aerospace, medical, and high-strength lightweight components.
C360 and C260 provide excellent machinability for fittings, valves, and precision machined connectors.
C110 and C101 are used for electrical, conductive, and thermal management components.
POM, Nylon, PTFE, PEEK, and ABS are suitable for lightweight, wear-resistant, and insulating parts.
After CNC machining, we provide a range of surface finishing options to improve appearance, corrosion resistance, and functional performance. The choice of finishing depends on the material, application, and required surface quality.
To get an accurate quote, we usually need your CAD file or technical drawing, material requirements, quantity, and any specific tolerance or surface finish requirements.
Every part goes through engineering review, in-process inspection, and final inspection. We also provide CMM reports if required.
Prototype parts usually take 1–3 days. Small batch production generally takes 3–7 days depending on complexity.
Yes. Our engineers can review your drawings and suggest improvements to reduce cost, improve strength, or simplify machining.
Yes, we regularly machine complex parts using 3-axis, 4-axis, 5-axis, and gantry CNC equipment for high-precision applications.
Simply send us your CAD file or drawing. Our engineering team will review it and get back to you with a quotation and feedback.
