Okay. According to the query on the official website of Lechem, the Lechem oxygen concentrator is a new type of high-tech medical equipment that can provide and adjust temperature by controlling the flow of oxygen, which can effectively reduce the symptoms of patients with respiratory diseases. It is of reliable quality, easy to use, and durable. Reliable, the oxygen concentration can be accurately controlled through precision control devices, the oxygen quality is high, the filter element is arranged in compartments, has a strong dust removal function, reduces the feeling of dryness, and can effectively reduce airway retained substances, so the Leica Oxygen Concentrator is of good quality.