Frequently asked questions

Pricing depends on material, part size, quantity and certification needs. Send us a photo and details — we'll quote within 24 hours. Or use the Quote Calculator for a quick estimate range.

Cr3+ (Trivalent Chromium) zinc plating uses chromium-3 ions, which are non-carcinogenic and meet RoHS/REACH directives. It replaces the older, hazardous Cr6+ (Hexavalent). We migrated entirely to Cr3+ in 2020.

Per ASTM B117: Cr3+ Blue passivation reaches 96 hours, Yellow 144 h, Black up to 240 h. We can engineer specs to exceed 280 h on demand.

Carbon steel (S45C, SCM440), alloy steel (SKD11, H13), stainless (SUS304, 316), and other materials by agreement. Send specs to our team for review first.

Yes — Hardness Test Report (HV/HRC), Coating Thickness Report (X-ray), Salt Spray Test Report (ASTM B117), Material Test Certificate. Issued with the order or separately.

Flexible — from a few prototype pieces to mass production of tens of thousands per month.

Typically 3-5 business days. Express service available in 1-3 days (additional fee). Volume orders scheduled in advance.

Yes — we export across ASEAN, China, and Europe. Cr3+ plating and heat treatment shipments handled regularly with full RoHS/REACH export documentation.