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The Function Of The External Point Machine Of The Mask
- Feb 10, 2018 -

With the development of China's economy, the development of land, the quality of the air is also declining, there are fine particles called fine grains, fine particles, pm2.5,2013 year February, the national scientific and Technical Terminology Validation Committee will PM2.5 Chinese name as fine particles. The chemical constituents of fine particles mainly include organic carbon (OC), Elemental carbon (EC), nitrate, sulfate, ammonium salt and sodium salts (na+). PM2.5 small size, large area, strong activity, easy to attach toxic, harmful substances, and in the atmosphere of long stay, transportation distance, so the human health and atmospheric environmental quality impact greater. In everyday life, masks are essential.