AngelBiss is the first one of the world to focus on fluctuation of an oxygen concentrator as well as the first one can precisely control oxygen fluctuation rate within 0.1% (industry average level is over 0.6%)In AngelBiss engineering lab research found that the lower fluctuation rate means that the oxygen concentrator has the less chance of defect in every connected parts, thus make the machine to run at perfect and durable life. Hence Stability and Quality both are ensured by the sole technology. That is the main charming of our AngelBiss products.Over 17 years of engineering study in gas products, AngelBiss engineers are mainly engaged in development, research, exportation and manufacturing quality products on the field of Oxygen Therapy, Surgery Therapy, Asthma Therapy and Diagnostic Therapy. With its own research advantages and powerful engineering capabilities, AngelBiss has provided many high-quality solution to customers all over the world, including Malaysia, India, Iraq, Spain, Netherlands, Ukraine, Chile, Peru, Japan, Australia, etc.