Masks are divided into three types: medical protective masks, medical surgical masks, and ordinary medical masks. The masks are composed of the hedral part, the nose bridge strip, and the earloop.1. The hedral partThe hedron is divided into three layers: inner, middle and outer. The outer and inner

Ordinary people will not be very clear about the classification and difference of masks, today we will take you to understand KN95 and N95 masks.The technical requirements and test methods of these two levels are basically the same, but they belong to the standards of different countries.

1. Select raw materials: choose an appropriate amount of PP non-woven fabric, nose bridge strip, silk thread, anti-bacterial filter paper, activated carbon cloth, waterproof and breathable membrane,Non-woven edging material and ear straps.