Use of PP spun-bonded non-woven fabric, forming a FOUR-FILTER LAYER, more effective filtration of harmful substances. Suitable for protecting from dust, PM2.5 haze particles, influenza bacteria, and other harmful particles.
Use of PP spun-bonded non-woven fabric, forming a FOUR-FILTER LAYER, more effective filtration of harmful substances. Suitable for protecting from dust, PM2.5 haze particles, influenza bacteria, and other harmful particles.