... (CR3),Zinc coat(CR6),Yellow zinc coat(CR6), Hot-dipped galvanized , Plain, Electric galvanized, Black,Dacromet. Specification DIN,ANSI,ASME,NFE,BA, JIS ... widely used in aerospace,automobiles,motorcycles,agricultural machinery,construction,transportation, electric power,electronics,chenicals,home appliances,military inductry and other industries ...