How about sichuan youbang mouthpiece

Sichuan Youbang mask good. According to the query related information, Sichuan Youbang mask certified by the business sector, registered trademarks, holding a business license issued by the relevant state departments, is the first in the province to obtain the national medical device production license of professional disposable medical protective supplies production enterprises, the production of masks with good quality materials to meet the relevant state regulations.