... 3.ISO9001,ISO14001,OHSAS18001 Ruigao's main Products:1.Model:Aluminum Alloy 6063 6005 60612.Temper avaiable: T5, T63.Surface ... tons, mould opening fee is free. Advantages1.have 26 production lines, including mould designing ,developing & manufacturing, smelting and casting, extruding ... ISO14001 certificate, all products are of environmental protecting 6063 aluminum alloy pipe for window curtain