... 1), Comply with GB, ASTM... ISO9000; 2), Exquisite surface; 3), Steady structure; 4), Low cost, high benefit. Brand NameEach MetalItem Name:Steel ... the product quality.ü Timely service and progressTwo kinds of surface treamentü Hot dip galvanize1, Standard: JIS, ... hole cutting good looking on surface of3, Galvanizing process:Steel structural components →Degreasing →Rinsing→ Pickling →Rinsing →Fluxing ...