"YY0469 to 20 1 1 Medical Surgical Mask" is a standard issued by the US Food and Drug Administration, which belongs to the People's Republic of China (PRC) (PRC) medical industry standard. It was put into use from June 20 13 to June 1 year, and the old standard YY0469 was abolished from 2004.

According to the specific technical requirements and testing requirements of YY 0469-201KLOC-0/Medical surgical mask, the mask should be neat and well-shaped, and the surface should not be damaged or stained. After wearing a mask, you should be able to cover the nose, mouth and chin of the wearer. Should comply with the design size and tolerance of the logo. Masks should be equipped with plastic nose clips. The length of the nose clip cannot be less than 8. 0 cm.