Yantai Hongyuan Oxygen Industrial Inc. was founded in early 1998,after more than 20 years of hard work,Hongyuan has developed into a leading enterprise in the same industry. The company is mainly engaged in design, manufacture and installation of pressure vessels for human occupancy such as medical oxygen chambers and decompression chambers etc.Hongyuan has obtained ASME, ISO: 9001, ISO: 13485 certification, and has exported the chambers to America, Britain, Cyprus, Australia, Canada, Spain, Romania, Belgium, Malaysia, Algeria, France, etc..