Joysun is a ISO9001 leading manufacture of vacuum pump, located in Shanghai, China. main products include X series Single stage rotary vane vacuum pump, root vacuum pump, screw vacuum pump, rotary piston pump and vacuum system project. The company adopted advanced Germany vacuum pump technology, and improve much during production. all key parts world famous brand. With its high quality, steady production, easy operation, excellent and in-time after -sales service, Joysun vacuum pumps are highly recommended from the client.