... samples +Materials:SWRCH8A,SWRCH35K,Q195LY,45# +Surface:Plain,Zp,Black,HDG +Packing:Ctns,Pallet Our company is a leading MANUFACTURER ... specialized in the production and marketing of fasteners and wire drawing,as well as the import and export of ... ,Non-standardSizeM6~M24SurfacePlain, Zinc(Yellow Zinc, White Blue Zinc), Black, DakeluoGrade of Strength4,6,8,10,12MaterialCarbon steel (SWARCH8A, SWRCH35K ...