Direct answer: Zhengna Technology manufactures automotive sun visor wire frames and skeleton wires from buyer drawings, controlling wire diameter, bend angle, end geometry, surface finish, and assembly fit.

| Buyer check | Why it matters |
|---|---|
| Material and thickness | Controls strength, spring behavior, corrosion resistance, and tooling route. |
| Critical dimensions | Defines fit, mounting, retention force, and assembly repeatability. |
| Burr and edge condition | Prevents trim, wire, hose, or operator damage. |
| Surface treatment | Supports corrosion resistance, appearance, conductivity, or sliding behavior. |
| Packaging | Prevents scratches, deformation, and mixed-lot shipment. |
Wire diameter, bend angle, end geometry, surface finish, and fit with the visor assembly are usually most important.
Yes. Zhengna Technology can make custom formed wire frames according to drawings and inspection requirements.
Fixture control helps keep bend angles and lengths stable across production batches.