1. Premium copper: According to the delivery system of Shanghai Futures Exchange, registered copper is divided into two different delivery grades: standard copper and substitute copper. The former is standard cathode copper, and the latter includes high-purity cathode copper and LME registered in London Metal Exchange. 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".

2. Pingshui Copper: Other domestic brands and imported LME registered copper are delivered according to the standard level, and do not enjoy the premium, which is used to be called "Pingshui Copper".