Feature: 1, Adopting international advanced EL gas-tight system can keep high vacuum degree. Gas-liquid separator, no reflux. 2, Host and vice highly effective double condenser, easy to install, good sealing, collection rate over 95%. 3, The rotating flask is connected by screw nut, easy to install and setup. 4, There is a discharge valve, fast to collect solvent. 5, Continuous feed are available. 6,This product uses the explosion- proof motor, explosion- proof inverter full- explosion- proof smart temperature control box..syi