●Advanced composite material,comfortable, fit and soft,good oil resistance,anti-aging,suitable for wearing long time;

●NANHE patent clasp design,repeat installation,disassemble are not broken,suitable for winter, easy and fast to install;

●Ring head belt design,more durable of polyester spandex elastic belt;

●Big window can reduce hot-gas to collect,low resistance,assemble KN90 filter cotton,high filtration efficiency;

●In line with GB 2626-2006 standard,have China LA and QS certification;

●Package:1pcs/bag,6bag/box,36pcs/CTN.