Biological Media, Aeration Diffuser manufacturer / supplier in China, offering Active Bio-Suspension Filler-Type of Bio-Active Carrier (MBBR) (Φ 25× Φ 10), Polymer Composite Gel Bio-Filler: Pcg-CF Sewage-Optimized Hydrogel Biocarrier (High-Difficulty Industrial Wastewater Treatment), Ssi Aerator Coarse Bubble Diffuser EPDM Effective Fully Imorted PTFE Layer and so on.