Hunan Zhuoyu Technology Co.,Ltd.is a new high-tech enterprisewhose scope of business mainly covers R&D, manufacturing, sale and service of PSA oxygen generating system. The purity of oxygen generated could be as high as 99.5 per cent that is up to standard of aircraft?breathing oxygen?, far beyond the standard of national medical oxygen (93％±3％) while energy consumption decreases by above 20 per cent. It represents strong technical support for oxygen provision in healthcare applications in terms of security, safety, high-efficiency and rational price.