... then the steel grade of galvanized steel coils can be DX51D, DX52D,DX53D,DX54D,DX56D,DX57D.Standard ... then the steel grade of galvanized steel coils can be SGCC, SGCH, SGCD etc..Standard of ... , then the steel grade of galvanized steel coils can be CS, FS, DDS, EDDS, SS etc ... resistant. Nongmu Yu oweners do use food storage, frozen meat and aquatic products processing equipment, etc; business is ...