Top aluminium roofing sheet factories in China including Haomei Aluminum supply good quality 3003 and 3004 aluminum roofing sheet product. The building roof has certain requirements for construction materials. Nowadays, the building roofing materials are mostly processed and produced with 3000 series aluminum-magnesium-manganese alloy sheet materials. Among them, the 3003 and 3004 aluminium sheet material has.. read more →