cathode copper is a kind of non-ferrous metal which is closely related to human beings. Widely used in electric power, light industry,Machinery manufacturing, construction industry, national defense industry and other fields. Used for winding resistance of various cables, wires, motors, transformers, switches, printed circuit boards. Raug muaj cov kav thiab cov khoom siv, ntsuas, tshuab nqus dej, cov twj tso pa tawm, cov plhaub pa taws, zoo li cov plhaub, phom, thiab lwm yam, thiab lwm yam.