... pump/vacuum pump portable, low noise, aggressive pump, ultimate pressure 200mbar, pumping speed 60L/Min, diaphragm pump /dry pump/vacuum pump Jinteng ... Jinteng Experiment Equipment Co.,Ltd. JintengGM-1.00 diaphragm vacuum pump has features of more advanced design, higher efficiency, ... be regulated by pressure to meet the requirements of vacuum or controllable steady air stream within certain range.6. ...