machining of hardware material:stainless steel ,aluminum, brass ,metal process:cnc turning ,cnc machining precision:0.02 We ... parts with different materials, such as brass, aluminium, steel, stainless steel, zinc.Our strong R&D and QC department ... automatic lathe,hand lathe grinder,thread roling.machine,tapping drilling machine,projecting apparatusroughness tester,hardness tester,concentricity tester ...