Manufacturer: Beijing Biosis Healing Biological Technology Co.,Ltd. Standard CN: YY 0469-2011 Standard EU: EN14683 Type R 1.Synthetic blood penetration test (anti-droplet blood body fluid) level 2 â?120mmHglevel 3160mmHg; 2.Bacterial filtration efficiency ( BEF)95% 3.Particulate Filtration Efficiency30%