... ,6A02,3003,etc. 4. top quality,reasonable price aluminum square tube1.Specifications PRODUCTaluminum tubeALLOY1060,2A12,3003,3A21,5A02,5052, ... ISO2000 Quality System Certificate. Our products are widely used in construction,packaging,air conditioner,solar power,cosmetic,etc. It ... also sold to over 180 medium and large enterprises in Zhejiang,Shanghai,Hangzhou,Wuhan,Shandong and northeast China. Warmly ...