Turbo Vacuum pumps in different size and models from world well-known brands
https://leyboldproducts.oerlikon.com/us/us/produktkatalog_02.aspx?cid=40_10
htps://www.pfeiffer-vacuum.com/en/products/turbopumps/
https://www.edwardsvacuum.com/STP/
http://www.agilent.com/en-us/products/vacuum-technologies/high-vacuum-pumps/turbo-pumps#3
