Screw CompressorChina Wholesale 7-13 Bar Best Price Quiet Stationary Electric AC Power Variable Frequency Direct Drive Oil Type Pm VSD Inverter Rotary Twin Screw Air Compressor, Find details about China Energy Saving Air Compressor, High Pressure Air Compressor from Wholesale 7-13 Bar Best Price Quiet Stationary Electric AC Power Variable Frequency Direct Drive Oil Type Pm VSD Inverter Rotary Twin Screw Air Compressor