... Aluminium welding 1.OEM service,good price 2. ISO certificated 3. Exprienced welding workers 4. Automative welding design ALUMINIUM WELDING ... , spinning, forging, sand casting, die casting, investment casting, etc.3. Surface treatment: Polishing, zinc plating, nickel plating, chrome plating, ... etc. And we also can offer 4 or 5 axis-CNC center processes.About our company:Jinan Rainbow Metalwork Co.,Ltd ...