HZY-K003 is an oxygen concentrator designed for use in medical institutions or households for oxygen therapy or healthcare purposes. It uses air as raw material, separates oxygen and nitrogen in the air using pressure swing adsorption (PSA), and filters out other substances in the air to obtain oxygen that meets medical standards. Can be applied to oxygen therapy for respiratory diseases, cardiovascular diseases, cerebrovascular diseases, altitude sickness, and other diseases. The integrated design is easy to use, with an oxygen output concentration of over 93% and an oxygen output volume of 3L/min, ensuring a long service life.