1, electrostatic filter cotton, high efficiency filter, smooth breathing 2, two sizes design, comfortable to wear, in line with the Chinese people face 3, more unique and hard breathable lining, more suitable for high-temperature, high-humidity environment 4, can be bent nose clip to ensure the best adhesion 5, folding, cleaner, easy to carry Packing: 50 / box, 10 boxes / carton = 500 Application: Suitable for construction, quarry, textile, grinding, metal casting, pharmaceutical, electronics, pharmaceuticals , generated when the material handling and grinding operations such as dust protection and other industries. Dust generation and all applicable encountered in life! Import efficiency electrostatic filter, Unique design shape, nose clip and headband with fine, to ensure a good seal with the face. Under the same effect, respiratory resistance, wear more comfortable. Protection in handling coal, iron ore and mineral containing quartz or during processing of cotton, wheat flour and other materials produced by the process of mechanical force, concentration in the occupational exposure limit of 10 times the kinds of dust and fog. Product Name: 3M self-absorption filter anti-particulate respirator mask disposable respirators Weight (with packaging): 60 g of the Asian face, more suitable for Chinese people's faces; static loading filter cotton, 3M's unique static efficiency filter cotton; chin sealless folding design, more comfortable to wear; soft liner surface, comfortable sense of touch face.