High Purity Olive Oxygen Concentrator Reviews – Medical Grade 10L Oxygen-Concentrator Overview of the MAIKONG Medical Grade 10L Oxygen Concentrator Medical Grade 10L Oxygen-Concentrator by MAIKONG CO., LTD. is a high-performance device designed for patients requiring reliable oxygen therapy. With an adjustable flow rate from 1 к 10 litres per minute and a stable oxygen purity of 93% ±3%, this oxygen …