As one of the leading and experienced manufacturer supplying the most advanced oil treatment solutions along with excellent quality machineries, LUSHUN Vacuum Pump System Unit Series mainly but not limitedly contains: (I) ZJ Series Vacuum Pump System which is applied to vacuum evacuation operation for electrical equipment in power distribution industry, power supply bureau, power plant and transformers manufacturers. It can achieve 10 pa working vacuum and 1 pa limited vacuum degree. The system is not suitable for pumping toxic gas, explosive gas, high-oxygen content gas, high-moisture content gas and the gas which will react with pump oil or cause erosive effect on ferrous metal,  (II) XZJ Series Pint-Sized Vacuum Air Pump Set which is applicable to vacuumize electrical equipment like circuit breaker, instrument transformer, GIS (Gas Insulated Switchgear) and refill gas SF6,  and (III) QZJ Series Water-ring Vacuum Pump Set which is suitable for establishing and maintaining the vacuum condition of turbine generator sets and condenser of that. During the operation of vacuum system, it continuously suck out the air which was inleakaged into turbine set and its condenser from different way.