How a part moves through Yiyonghui, from drawing to shipment.
Our engineering team reviews tolerances, material selection, and manufacturability before production begins.
Parts are produced on qualified, monitored equipment with in-process dimensional checks.
Cosmetic and functional finishing is applied and verified against client-approved masters.
Full dimensional and cosmetic inspection, with data retained against the part's full traceability record.
Parts are packed to client specification and shipped against agreed delivery windows.
| Material category | Specification / grade |
| Stainless steel | SUS303, SUS316L, SUS304 |
| Aluminum alloy | AL6061, AL6063 |
| Copper / Brass | C3604, H95, C14000 |
| Ferritic stainless steel | SS416, SS420J1, SS420J2, SS430 |
| Free-cutting steel | 1214, 1215 |
| Kovar alloy | 4J29, 4J50 |
| Titanium alloy | TC4 |
Our product line is extending from wired connector parts toward wireless-related components.
Moving from single-function parts toward integrated accessory modules.
Building processing capability for precision optical components.
Vertical integration from parts, to components, to modules, to systems — expanding horizontally across computer, consumer electronics, communication, automotive, and healthcare applications.