... alloy 2.Finish:zinc platd,polish cnc stainless steel machining precision part Strictly quality control by 100% ... in various ways. In addition to CE and BV mark of the products, we have won quality certificate ... fifth wheel, lift platform, garage, hardware, crane partsMaterialcarbon steel, stainless steel, aluminum alloy, copperProcedurewelding,stamping,cutting,punching,bending,grinding,machining ...