arm hydraulic lift platform, 1.Material: carbon steel,stainless steel ,aluminum 2. ... an close and careful eye on each procedure. Item Name arm hydraulic lift platform Product description1)Material:carbon steel ,stainless steel or ... seam welding,,metal assembly,CNC Laser cutting,punching, folding and bending, CNC machining, drilling,powder coating,pressing part, polish,etc. arm hydraulic lift platform