The pollution of asphalt smoke is mainly concentrated in the loading area of finished materials, and a large amount of asphalt smoke is spread out, which seriously harms human health. Asphalt mixing equipment stops production, and a large amount of dust will be produced when washing pot materials are unloaded, polluting the environment. With the use of asphalt more and more, in order to prevent the asphalt mixing station loading area produced by the asphalt smoke and dust harm to human health, pollution of the surrounding environment, in the process of asphalt processing and use of smoke purification device is becoming more and more important. TODO can provide aramid fiber, aramid needle felt, aramid filter bag, to prevent pollution, reduce emissions and ultimately increase productivity.