... non-ferrous alloys OK 4.low price&prompt quotation OEM Stamping for car:Good quality, professional teamwork, prompt communication ... Solid work .4. Inspection, Three lines of inspections before packing.Coating thickness tester, Roughness tester, Go / Ungo Gauge, Sault ... Solid work .4. Inspection, Three lines of inspections before packing.Coating thickness tester, Roughness tester, Go / Ungo Gauge, ...