Hebei Water Park Pool in located in Hebei Provice,which is with 600m3 pool water volume, and the cycle time of the pool is 6h, then the water flow rate is 100m3/h. And that pool is with 5 sets of sand filter + 5 sets of the water pump as the filtration system, added drug as the disinfection system. Also with the water system for kids playing in the pool.