... , mining, hydraulic, marine and general hardware applications. Our Company is the manufacturing operation of an USA company in China , We are ... quality? Which standard of SAE do you meet? What is the standard code? A: We don't have model customer in domestic market ... structure, does it be electroplated? A : No, it is not electroplated, we only do some polishing on the surface W4 Mat'lPart NumberW5 ...