meets European standardsZP3galvanized metal bolts and screws≥ 5um
Hot Galvanized Expansion Bolts and Screws Conforming to European Standards≥ 40um
Zn-Ni-alloy≥ 750hrs's New Coated Metal Bolts and Screws
stainless steelA4(SS316)andA2(SS304)Passivated Metal Bolts and Screws