Silver, has good electrical conductivity, thermal conductivity, and good chemical Q qualitative and ductility. T is widely used to manufacture various electrical contacts in electronic calculations A, telephones, electric stroke machines, refrigerators, power supply equipment, radars and other electrical appliances The silver of Dayun is also used to make brazing various 4k alloys and alloys. The silver solder is expected to have impact resistance, shock resistance and durability. It has been widely used by Ding Aokong industrial and aerospace technology for a long time. Used to make jewelry decorations, currency, commemorative coins, medals, etc. Silver salts, such as silver nitrate, silver halide and various summer accessories are sensitive to light, and are widely used as photosensitive materials such as motion picture film, photographic film and F film. Silver nitrate, polybasic silver phosphate, cast, sodium salt, etc. have a strong anti-bipolar effect and are used as bactericidal materials and medicines. With the development of science and technology, the use of silver and its alloys will continue to expand.