1)Certificate ISO9001:2000,ISO14001:2004,SGS 2)Very good elongation,and rust-proof quality. 3)Standard:GB/T3880/3190/3199 Specifications: Specification:1)Alloy: 3003,31052)Temper: O,F,H12,H14,H16,H18,H32,T4,T53)Thickness:1.0mm-20.0mm4)Width:50mm-1250mm5)Maximum Length:3000mm6)Packing: interleaved paper between sheets,wrapped with plastic film and brown paper and then packed with wooden pallets or ...