Civil Defense Filter Absorber (hereinafter referred to as the Filter Absorber) is a type of civil defense filter absorber, which is a core product in wartime ventilation systems. It is mainly used in ventilation systems for contaminated air in civil defense projects.

Effectively filters toxic smoke, fog, biological aerosols, and radioactive dust from contaminated air, resulting in a persistent clean air filtration. Mainly installed in anti-chemical Level B and C civil defense projects.

Process to remove chemical agents, biological warfare agents, and radioactive dust from the air using a free radical activator, fine filter, and decontamination filter, and to kill microorganisms trapped in the fine filter unit.

Prevent the large-scale proliferation or migration of biological agents by providing clean air within the fortifications.