It is e organic eam, such as formaldehyde, carbon dioxide, and oer harmful Trapezoidal design, center not easy to cause ne fatigue when using, more conforms wi e ergonomics Adopts activated carbon, has longer life time; unique filtering eect, better abson Rotating design, more able to connect and fix it on e main body, easy for us to replace e aories It is suitable for 6200 protective, Manufacturer: Oxxggkao