High-Quality CNC Routing & Precision Machining Services

Critical CNC-milled, routed, and turned features can be held to ±0.005 mm, with ±0.01 mm achievable as a standard across production features. The final achievable tolerance depends on raw material stiffness, feature geometry, and wall thickness, which is thoroughly verified during our 24-hour DFM engineering review prior to cutting metal.

CNC machining, Swiss precision turning, and metal progressive-die stamping run directly inside Sunmy-owned Shenzhen facilities. High-pressure die casting and specialized surface finishing (such as MIL-SPEC hard anodizing or electroplating) are executed by our closely audited, long-term partner facilities. Crucially, all final quality inspection, CMM dimensional verification, and AS9102 First Article Inspection reports are strictly performed in-house by Sunmy engineers before any export dispatch.

Sunmy enters into a signed Non-Disclosure Agreement (NDA) with your legal or engineering department prior to transferring any 3D models or engineering drawings. You communicate directly with our technical leadership; drawings are kept inside secure local networks and are never distributed to secondary trading brokers or uncontrolled bidding platforms.

Shipments routinely include full batch Material Test Reports (MTR / Mill Certs), First Article Inspection (FAI) reports, CMM coordinate inspection sheets with GD&T verification, surface roughness (Ra) records, and RoHS/REACH compliance documentation. Salt spray corrosion certificates are also provided for anodized or plated components upon request.

Yes. We leverage 5-axis CNC routing and turning, SLA/SLS 3D printing, and urethane vacuum casting for prototype validation (1 to 50 pieces). Once the geometric design is fully validated, our engineering team smoothly transitions your project into high-volume tooling, die casting, stamping, or multi-cavity injection molding under one accountable roof.

We work natively with STEP, STP, IGES, X_T, DWG, and high-resolution PDF technical prints. Our degreed engineering staff replies within 24 hours with an actionable manufacturability review, tooling pathway, and competitive tiered price quotes.