... welding, chemistry, pharmacy, coating and electronic industries. Vacuum Gas Pump DeviceVacuum gas pump fast in startup and pumping, and thus is ... . Besides, it can also be used for vacuumization in vacuum metallurgy, welding, chemistry, pharmacy, coating and electronic industries... ... TypeUnitZJ-70ZJ-150ZJ-300ZJ-600ZJ-1200Power Supply 50Hz 380V 3-Phase 4-Wire (or as requested)PowerKW46.571118.5Limit ...