Material: Surface material: pure silver, fine-grained silver, silver nickel, silver copper, silver cadmium oxide, silver zinc oxide, silver tin oxide, silver tin indium oxide, etc. Base material: red copper, copper-nickel, etc.; can be electroplated with gold, silver, nickel, etc.; application: AgCdo (silver-cadmium oxide) series: light switches, circuit breakers, electromagnetic switches, micro switches, motor protectors, line starters, fuseless circuit breaker control switches, heavy load relays, cam switches, etc. AgSno (silver-tin oxide) series: car breakers, micro switches, electromagnetic switches, various switches and high-energy bracelet points, household circuit breakers, etc. AgNi (silver-nickel) series: small power switches, static bracelet points, line starters, circuit breaker micro switches, control switches, temperature regulators, thermostats. AgSnOlnO (Silver-Indium Tin Oxide) series: circuit breakers, electromagnetic switches, various switches and high-precision bracelet points, etc. Sterling Silver and Others: Automatic Switches, Thermostats, Roasters, Ovens, Timers, Medium Power Switches, etc. advantage: AgCdo (silver-cadmium oxide) series: It has good wear resistance, anti-welding and electrical and thermal conductivity, and the contact resistance is small and stable. AgSno (silver-tin oxide) series: high thermal stability, heat resistance, arc erosion resistance and melting resistance, long service life AgNi (silver-nickel) series: when used in DC contacts, it has good electrical conductivity, low contact resistance and stable surface, and the electrical loss is small and uniform. AgSnOlnO (silver-indium tin oxide) series: have better thermal stability and higher hardness, and have better weldability and durable burnout. Sterling silver: the best conductivity, but easy to stick, easy to solder. Capacity: 30 million capsules/month