Copper foil has low surface oxygen characteristics and can be attached to a variety of different substrates, such as metal, insulation materials, etc., with a wide temperature range. Mainly used in electromagnetic shielding and antistatic, the conductive copper foil on the substrate surface, combined with the metal substrate, has excellent conductivity, and provides electromagnetic shielding effect. It can be divided into: self-adhesive copper foil, double guide copper foil, single guide copper foil, etc. Electronic grade copper foil (purity more than 99.7%, thickness of 5um-105um) is one of the basic materials of the electronic industry. With the rapid development of the electronic information industry, the use of electronic grade copper foil is increasing. The products are widely used in industrial calculators, communication equipment, QA equipment, lithium ion batteries. TV sets, VIDEO recorders, CD players, photocopiers, telephones, heating and cooling air conditioners, automotive electronic components, game machines, etc. The demand for electronic grade copper foil, especially for high performance electronic grade copper foil, is increasing day by day in domestic and foreign markets.