Medical‑grade concentrators are regulated by the National Medical Products Administration (NMPA), which certifies and issues a medical device registration certificate. They are primarily intended for patients with respiratory conditions such as COPD, emphysema, and interstitial pneumonia.

Wellness‑grade concentrators, on the other hand, are designed for those experiencing breathing difficulties, daily oxygen therapy, or travel to high‑altitude areas. However, they are not recommended for long‑term use by patients with respiratory diseases.