It was designed by China Institue of Water Resource and Hydropower Research.S wave cooling tower fills has trapezoidal “s” wave design, which increases the closure number of water film, and makes the water film redistribute repeatedly as well as tending to be more uniform.increase the vertical convex retention corrugations, and promote the horizontal diffusivity of water film. It extends the time for heat and mass transfer and improves the cooling effect. Several pieces of fills are connected with each other, forming honeycomb passages, which prevents contaminants from blocking. It is widely used for counter-flow cooling tower in industrial area and cement cooling tower with hyperbolic curve in power plant.The adaptive temperature is 68℃ – minus 35℃, the flame retardation performance is good, and the oxygen index is higher than or equal to 40℃.