Though smelting, casting, hot-rolling, cold-rolling, heat-treatment, finishing and other rechnology, the heavy melting aluminium and an appropriate quwquality of alloying elements is processed to light nonferrous metal material which has the characters of fine luster, good looking, light weight, poisonless and smellessness, and it also has good propertles of transmitting electric current and heat, processing and corrosion-resisting

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