For attached Heavy-Duty Bed Bracket Material : Q235 Surface : zinc coating Hongtuo Manufacturing capabilities(OEM and custom Engineered Components Specialist)1. ... ,lathe ,assembing,etc.3.Pree:5MT-200MT4.Finish : anodizing ,powder -coating,zinc-plated ,nickel plate, rusty oils,electrophoresis,and so on5 ... ,machine.and so on6.Certificate: GS,ROHS,ISO 9000-2001 Bed Bracket(bed accessories)