1,Voltage : 380V Single-unit 2,power : WIN-PSS-P 18 ~ 1000kW 3,The warrantee period is 12 months within 380VEnergy-saving system for oil extractor1,Voltage : 380V Single-unit2,power : WIN-PSS-P 18 ~ 1000kW3,The warrantee period is 12 months within 4, The special energy-saving system for air compressor Energy saving system for pump and fan18 to 1000kW, energy saving system manufacturers