Chile 1 electrolytic copper is the standard cathode copper produced in Chile. According to the international standard GB/T467- 1997, the silver content of copper is not less than 99.95%. Grade A electrolytic copper is high purity cathode copper, which meets the national standard GB/T467- 1997, and the purity can reach 99.9935%.
According to the delivery system of Shanghai Futures Exchange, registered copper is divided into two different delivery grades: standard and substitute. The former is standard cathode copper, and the latter includes high purity cathode copper and LME registered cathode copper. Among them, the registered copper that meets the standard of high-purity cathode copper and is recognized by the exchange is delivered at a premium, and the premium range is 1 10 yuan, commonly known as "premium copper".