... c. We can do testing of hardness, salt spray test, coating and so on.SPECIFICATION:MATERIAL: LOW CARBON STEEL, C1045, BRASS, ... ALUMINIUM, AND OTHER MATERIAL REQUIRED BY PRINTS.FINISH: COMMON BLACK POWDER COATING, ROHS POWDER COATING, ZINC CLEAR/ ZINC YELLOW ... HAVE ANY SPECIAL REQUIREMENTS OF MATERIAL, FINISH, HARDNESS, PACKING AND SO ON, PLS GIVE US THE DETAIL OR PRINTS. HOPING ...