The counter current tower adopts pipe or trough type water distribution, while the cross current tower adopts pool type gravity water distribution or pipe type water distribution. UPVC and FRP pipes are used, and the fasteners are made of stainless steel, with a service life of over 20 years. The downward splashing pipe type stabilizing water distribution system fully ensures that the water pressure head in front of each nozzle is closer. There are various types of nozzles, such as volute type and three splash target type, to meet the requirements of different water quality and quantity. The nozzle is made of ABC material, with high strength and long service life. The spraying area between the nozzle and the filling material is constructed reasonably, without any obstacles, to ensure that the filling material is evenly sprayed with water.