Hangzhou Shuguang Electric Appliance Co., Ltd is a professional medium-size manufacturer of all types of insulator, integrating development and production together. Our main products include: Signaling device, Capacitive insulators,Isolation Contact Spout Bushings and Vacuum Circuit Breaker Interrupter Housing etc. Our company was established in 1993, and we have many years of history in the electric power industry. Located near Shanghai, we enjoy convenient water, land and air ...