Keshuo masks were randomly inspected and found to be unqualified for sterility. Therefore, it is not recommended to purchase them.

Recently, the Shaanxi Provincial Food and Drug Administration issued the Shaanxi Provincial Medical Device Quality Announcement (2022 Issue 1, Total Issue 6). According to the announcement, a batch of medical surgical masks produced by Henan Kaishuo Sanitary Materials Co., Ltd. was found to be unqualified for sterility.