... machine etc3)Advanced measuring & testing equipment: projecting apparatus, roughness tester,hardness tester, concentricity tester etc4) Surface treatment: polishing, zinc plating, nickel plating or ... rolling machine,taping dring machine etc.Advance Measuring equipmentroughness tester,hardness tester,concentricity tester,projecting apparatus, etc. Usagecomputer parts,home appliances parts,electrical ...