... ultrasonic cleaning; 4 surface:knurl; 5 Mini PO: 1000 Specification of brass machining: Material Cu 59,62#; ... USC ultrasonic cleaning; surface knurl, plated; Mini PO 1000 pcs Equipmentcnc milling machine, CNC machining center etc;Drawing ... etc;Inspection equipmentThree-coordinates measuring machine,Hardness-testing device,spectrum analyzer;Materialaluminum alloy, carbon steel, stainless steel,cast iron ...