The product is coal-based columnar activated carbon. The adsorption activated carbon for human defense protection produced by our company is based on Ningxia high-quality anthracite coal, which is moderately activated and made into chromium-free activated carbon with appropriate amount of microporous and mesoporous developed, so that the product has good impregnation and adsorption, and the final product can be installed in the air filtering system of combined civilian and combat fortifications, which can effectively filter out toxic smoke, toxic substances, radioactive dust and biological aerosols in the external poisoned air, and can inactivate the biological organisms and prevent them from multiplying or migrating. It has the advantages of long anti-toxic time and long storage time, and has the performance of "installation in peacetime and protection in wartime" for human defense projects.