... months. pump, vacuum pump, vacuum equipmentFJ-620/FJ-500F Molecular Pump UnitFJ-620/FJ-500F series combined molecular pump unit is ... clean and ultra-high vacuum acquisition equipment with various F160/620 series combined molecular pumps or FF-160/500F combined ... vacuum elements and vacuum technique etc.Molecular pump unit--FJ-620/FJ-500F molecular pump unit technical characteristics:Product typeFJ- ...