... we developAD22-22B,C,D,E,G,H,double color lamp, position indicator,shining buzzer and mini short indicator,as ... standard lampshade. Main technical target: (1)Voltage of working frequency:205kV(AC valid calue),1min.(2)Insulated resistance≥2MΩ(3 ... the whole esectrical apparatus industry through our competent experience and high technology.We have established solid business relationships with more ...