... . 3.hight capacity .For polishing and plane burnishing of stainless steel plate,black metal,non-ferrous metal,nonmetallic work piece, copper ... polishing quality as the size of work piece, Only for metal products. For thin stainless steel, aluminium, copper work pieces, special ... drive and high-class electric CabinetThis machine is used for surface polishing. It has the movements; the workbench ...