... of inspections before packing.Coating thickness tester, Roughness tester, Go / Ungo Gauge, Sault spray testing machine, Hardness tester5. Production process, pressing, grinding, precision ... of inspections before packing.Coating thickness tester, Roughness tester, Go / Ungo Gauge, Sault spray testing machine, Hardness tester5. Production process, pressing, grinding, precision ...