... Making process: 1. Tig Welding, 2. Mig Welding, 3. Riveting, 4. Grinding, 5. Stamping, 6. Assembling, 7. Bending etc. Surface treatment: 1 ... . Powder coating, 2. Hot galvanized, 3. Painting, 4. Polishing, 5. Brushing, 6. Cataphoresis, 7. Chrome/Zinc/Nickel plating ... 8. Cold press; 9. Turning machine; 10. Milling machine; 11. Grinding machine; 12. Oil hydrulic press; Serve type: 1. OEM 2 ...