... aluminum alloy, to obtain the title of China Inspection Exemption Product ISO9002 ISO14001 1.Product type: curtain wall ... Aluminum extrusion process: Drilling, Cutting, Stamping, Milling.6. The product quality is high quality products.1.Product type: curtain wall ... coating, Anodic oxidation, Electrophoretic coating, grainy transfer.5.Aluminum extrusion process: Drilling, Cutting, Stamping, Milling.6. ...