Plastic mesh cage ball porosity, heat-resistant, chemical resistant, pressure drop, and mass transfer unit low height, high flooding point, sufficient vapor-liquid contact, small specific gravity, high mass transfer efficiency. Use in a variety of medium temperature of 60-150 degrees Celsius, packed tower is widely used in petroleum, chemicals, chlor-alkali, gas, and environmental protection industries. Can be widely used for a variety of horizontal acid storage tank, condensate storage tank in the water treatment and desalination water tank, a large extent reduce heat loss, reduce carbon dioxide and oxygen in the acid mist and air pollution on the water to protect the health of the operating personnel , to keep the water quality, energy conservation, and the effect of cleaning up the environment. Applicable to horizontal acid storage tanks for petroleum, chemicals, chlor-alkali, gas, metallurgy, environmental protection, power companies, the condensate storage tank in the water treatment and desalination water tank, a large extent of the reduction in acid mist, carbon dioxide in the air and oxygen water pollution.