Variety of folding masks

There are various types of folding masks. According to the structure, they are mainly divided into single-layer folding masks, double-layer folding masks, three-layer folding masks, four-layer folding masks, five-layer folding masks, and flat-folding masks. According to different materials, the functions of breathability and filterability of masks will be different, and the scope of application will be different. For example, single-layer and double-layer folding masks are mainly made of non-woven fabric or paper. These masks do not have filtering data for filtering dust and germs, but they have good air permeability and are mainly used in food and beauty occupations.