we vacuum interrupters. Our company has a group of experts and technicians who have been specialized in producing vacuum interrupters for more than thirty years, and enjoys the tax preferential policy as a hi-tech enterprise. Products and technology of our company Our company has developed 1.14kv-40.5kv vacuum switch tubes of more than 100 types, which can be widely used for various vacuum circuit breakers, contactors and load break switches. As an ISO9001:2000 certified company, our production process strictly conforms to quality management system. The optimun design of our vacuum interrupter has been developed by our company together with prestigious institute.Leakage rate has been controlled in less than one-thousandth by Once Seal-Exhaust Technique,making the mechanical life of our products largely enhanced,Operation scales Sales volume of 1.14KV-40.5KV ceramic vacuum interrupter has reached 386,508.