... ,polish,zinc plated,acid pickling light galvanized u frame steel beams1.Strictly quality control by 100% inspection2 ... products, we have won quality certificate in accordance with ISO 9001:2008 rules. Main productsmetal fabrication, ... , lift platform, garage, hardware, crane partsMaterialcarbon steel, stainless steel, aluminum alloy, copperProcedurewelding,stamping,cutting,punching,bending,grinding ...