High efficiency electrostatic filter material, low respiratory resistance, effective protection of dust under 0.3 mum

The combination of elastic band and headband reduces the pressure on the head and neck and does not affect the wearing of other protective products

Hinge structure (door hinge model), filter material bad open and close easily, easy to replace the filter material

Quick rotary interface, high quality silica gel sealing ring is installed in the filter cotton receiving seat to ensure the sealing performance, quick disassembly and cleaning