•  3 layer construction, top and liner layers are PP non-woven, middle layer is high performance filter cloth.
• Meet the standard: ASTM F2100-19 Level 1. PFE (filtration efficiency for non-oily particles) & BFE (bacterial filtration efficiency) ≥95%.
• Low respiratory resistance, free of odor and stimulation.
• Ultrasonic welding process, comfortable wearing experience
• These masks are class II medical devices, and are intended to be worn by health professionals during surgery and during nursing to catch the bacteria shed in liquid droplets and aerosols from the wearer's mouth and nose.catch the bacteria shed in liquid droplets and aerosols from the wearer's mouth and nose.
• Manufactured by Winner Medical Co.