Translate   2 yrs

Oxygen concentrator is an electrically operated medical device which provides purified oxygen. This device works by pumping indoor air into a container that separates oxygen from room air and concentrates it to provide oxygen continuously to users.http://www.nuzhuoasu.com/nitrogen-generator/

  • Like
  • Love
  • HaHa
  • WoW
  • Sad
  • Angry