According to national standards, sanitary napkins can be divided into three categories from the surface material:

Dry net sanitary napkins

Refers to sanitary napkins made of various perforated films as raw materials for the surface layer of sanitary napkins, which are mainly polyethylene, commonly known as PE film;

Cotton soft sanitary napkins

Refers to sanitary napkins made of various non-woven materials on the surface of sanitary napkins, which are mainly polypropylene, commonly known as PP

Pure cotton sanitary napkins

Refers to sanitary napkins made of pure cotton on the surface of sanitary napkins, which are mainly pure cotton non-woven fabrics