Copper is a metal element, product specifications are 0.1 ~ 3 x 50 ~ 250mm state copper products, mainly used in the production of electrical components, lamp, battery cap, buttons, seals, connectors, mainly used for electrical and thermal conductivity, corrosion resistant equipment. Such as electrical components, switches, gaskets, gaskets, electronic vacuum devices, radiators, conductive mother material and automobile water tanks, heat sink, cylinder pieces and other components.