Kn95 Face Mask, 3-Ply Protective Surgical with Ear-loop, Medical Mask 1. disposable three-layer masks are made of two layers of non-wowen fabrics and meltblown cloth; disposable three-layer masks are made of two layers of fiber non-wowen fabrics that are professionally used for medical and health, and an additional layer in the middle for filtering more then 99% of bacteria dissolved spray cloths are ultrasonically welded. the nose bridge is made of environmental friendly plastic strips, contains no metal and is breathable and comfortable 2. Disposable masks can be used in electronics manufacturing, dust-free workshops, catering services, food processing, schools, spray processing, stamping hardware, electroplating, chemical, steel, welding, health centers, hand processing industries, hospitals, beauty, pharmaceutical, factory, environmental cleaning, public places and many other uses.