Tolerances from ±0.006mm. We machine and finish stainless steel, aluminum, copper, and titanium alloy components for the electronics, automotive, and medical industries.
From copper's conductivity to titanium's strength, we select the material to suit the part, then machine it to the required tolerance and finish.
Cosmetic and functional ring components for touch assemblies and camera modules — one of our highest-volume product lines.
Lightweight structural and cosmetic parts machined to tight tolerance, for wearables and consumer electronics.
Precision-machined steel parts for structural and load-bearing applications across 3C electronics, automotive, and medical devices.
Precision rotating hardware for folding and articulating devices — headset pivots and tablet kickstands both use this process.
Five key steps a part goes through at Yiyonghui.
Our engineering team reviews tolerances, material, and manufacturability before production begins.
Parts are produced on qualified equipment with in-process dimensional checks.
Cosmetic and functional finishing applied against client-approved reference samples.
Full dimensional and cosmetic inspection, logged to the part's traceability record.
Packed to specification and shipped against the agreed delivery window.
From machining to inspection — what's on our floor.
Fanuc high-speed CNC centers, Nomura (Japan) NC lathes, MY (Taiwan) automatic lathes — accuracy to 0.006mm.
See production equipment ›Vertex 420 CMM, Mitutoyo profile projector, salt-spray chamber, and seven more instruments — ISO 9001 certified.
See QC equipment ›Whether it's a production quote or a prototype run, our engineers will assess feasibility.
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