Beijing North Star SciTech Co., Ltd., which is a holding company invested by Beijing North Star Industrial Group, is a high technology company which mainly develop and produce the molecular sieve oxygen concentrators. The company is a High-tech Enterprise which is registered in Beijing Haidian Zhongguancun Science Park. The predecessor of the company is Beijing North Star Science and Technology Development Co, which is reconstructed to limited-liability company in 2002. The company developed and produced the first set of the small typed molecular sieved oxygen concentrator in 1992. At present, there are 5 FY series, 9 models medical healthy oxygen concentrators. With ten years hard exploitations, the company has been the first top enterprise to produce medium and small-typed medical oxygen concentrators in China. The company depends on the technology and strict management and tries its best to provide high quality products and satisfied service to all customs. The company occupies more than 4000 square meters production area, the present production output can be 15 thousands units per year, and the designed output is 50 thousands units per year. The Yaao oxygen concentrator, which is developed by our xxxxx, has been applied widely in the hospitals at all different levels, clinics, health centers, health institutes, medical stations and all kinds of other medical establishments, family nursing, health care for the old men or old women, mental workers and students, etc. The products adopted the molecular sieved separation technology have wide application in water treatment, ozone and environment protection industries. The products good quality and good service has been accepted and praised by the most customers. Beijing North Star Yaao SciTech Co., Ltd. makes the quality principle Making innovations is the soul of development, Satisfaction is the base of quality The company obtained the ISO9002 internal quality system certificates