FY600 Portable concentrator is developed by our company . Adopt ZSY control system. It can economize 50% on energies than traditional work method.FY600 has the ability to supply oxygen on demands ,(supply oxygen only when inhaling)and pulse flow setting (16 times per minute) in which can meet various needs ofr oxygen therapy and oxygen health care in real compact size . It has multiple power options : 1. Normal household AC power ; 2. Car DC Power Supply , it is suitable for car and yacht; 3. Rechargeable lithium battery pack