Melt-blown fabric is the core material of face masks, made of polypropylene, and its fiber diameter can reach 1-5 microns. Its unique wick structure of the ultra-fine fibers can increase the number and surface areas of fiber per unit, which enables the fabrics possess the properties of superb filtering, shielding, thermal-insulating and oil-absorbing.

What's ASTM F2100 - 21 standard in US market and the terminology of mask certification

There are three types of surgical masks for EU Market..MORE