1. Crude copper is made into thick plates in advance as anode, pure copper is made into thin plates as cathode, and mixed solution of sulfuric acid and copper sulfate is used as electrolyte. After electrifying, copper dissolves into copper ions from the anode and moves to the cathode. After reaching the cathode, electrons are obtained, and pure copper is precipitated at the cathode, also called electrolytic copper.

2. Shanghai Copper is the abbreviation of Shanghai Futures Exchange, and Shanghai Copper refers to the copper futures products of Shanghai Futures Exchange.