Tower packing has excellent acid and heat resistance, resistant to all kinds of inorganic acids, organic acids and organic solvents in addition to hydrofluoric acid corrosion, can be used in a variety of high and low occasions, the application range is very wide can be used in chemical, metallurgy, gas oxygen industry drying tower, absorption tower, scrubber, recycling tower. According to the material can be divided into three categories: ceramic packing, plastic packing, metal packing.