... : Al,Cu,Steel,SS Finish: zinc, black oxide, copper, nickel, clear etc Our product details, as follows:Normal Size: M1 ... aluminum, alloy etc.Finish: white/yellow/blue/black zinc, nickel, black oxide etc.Trading term: FOB Shanghai or CINXXX, ... Treatment - reach the required hardnessElectroplatingwhite/yellow/blue/black zinc, nickel, black oxide etc.CleaningOrdering Rule…Minimum order quantities is ...