screw vacuum pump (also known as twin screw vacuum pump, no oil dry screw vacuum pump) is my company according to the market demand, independent research and development of advanced technology of dry vacuum pump. Because screw vacuum pump without oil lubrication or water seal, pump chamber completely without oil, so screw vacuum pump in the semiconductor, electronics industry requirements without oil clean vacuum occasions and pharmaceutical and chemical solvent recovery process and has incomparable advantage, can be widely used to replace rotary vane vacuum pumps, rotary piston vacuum pump, water ring vacuum pump, water jet vacuum pump, reciprocating vacuum pump, roots water ring vacuum unit.