Air Filters, Eco Home & Non-Toxic Living Oxyvital is a German-Swiss brand of medical-grade, non-toxic air purification and oxygen concentration systems for medical, residential and commercial use. 出售由科學家研製的專業空氣過濾器和淨化器,適用於家居及商業用途。 http://www.oxyvital.com/ Suite 404, 4/F, Chinachen Exchange Square, 1 Hoi Wan Street +852 2893 5928 info@oxyvital.com