PP Melt-blown nonwoven is the most popular material as the high efficiency filter media in the application of air filtration, mainly used in medical masks used in the hospital, personal care respirator, HVAC pocket air filter, HEPA air filter, home care air cleaner products and automobile cabin air filter products. We own serials of static electret charging technology, including customized formula with electret master batch, patented high voltage charging equipment with special designed charging panel. The filter media has high filtration efficiency with low penetration pressure and can keep longer time on shelf quality.