High-voltage power distribution equipment for power system refers to the generation, transmission, distribution, power conversion and consumption play-off, control or protection and so on, the voltage level at 3.6kV ~ 550kV electrical products, including high-voltage circuit breakers, high voltage disconnectors and earthing switch, high voltage load switch, high voltage automatically coincide with the staging, high-pressure operating mechanism, high-pressure explosion-proof electrical equipment and high voltage switchgear and other categories. High Voltage Switchgear Manufacturing is an important part of power transmission equipment manufacturing industry plays a very important role in the whole electric power industry.