... spare parts are widely sourced for the production of electrical appliances, kitchenware series, automobiles, industrial machinery, ... steel, Iron (SPCC, SECC, SPTE, tinplate), aluminum alloy, red copper, brass, bronze alloy, etc. 6. Surface treatment: ... CAD, CAXA, UG, CAD / CAM / CAE8. Application: electrical appliances, kitchen, construction, automobiles, industrial machinery, water treatment equipment ...