The flat film aerator is a ***** type aeration device developed in 1980's, the device is an aeration bubble diameter small, the gas and liquid interface diameter small, the gas and liquid interface area large, the bubble spreads uniformly, will not produce hole eyes blockage, strong corrosion resistance, by Shanghai Tongji University Environmental Engineering School and China Municipal Engineering China North Design Institute for clean water and wastewater oxygenation testing, and by more than 50 users years long use good results (compared to conventional products fixed spiral aerators, diffusion aerators and perforated tube aerators reducing energy consumption by 40%, or increasing wastewater treatment by 40%). A lëu bï ya luui në ɣän kɔ̈k yiic ku ɣän kɔ̈k yiic, ku ɣän kɔ̈k yiic, ku ɣän kɔ̈k yiic, ku ɣän kɔ̈k yiic, ku ɣän kɔ̈k yiic, ku ɣän kɔ̈k yiic.