... on Sheet Metal Fabrication:1.material:steel, stainless steel, aluminium, copper;2.finish:powder coating,painting,zinc plating,nickle ... coating,brushing,sand-spraying;3.fabrication machine:laser cutting machine,CNC shearing machine,CNC punching machines,CNC bending machines ... ,stamping machines,etc;4.precision:+/- 0.05-0.1mm;5 ...