1. Fast hanging bacteria: ring-mounted design, good dissolved oxygen.
2. Good hydrophilicity: The microporous culture area is large, the water replacement speed is fast, the biological activity is high, and the water purification effect is good.
3. Not easy to pulverize: high temperature firing, small size, light weight, firm structure, not easy to pulverize.
4. Neutral filter material: The water quality is stable in pH, and it is not easy to affect the fluctuation of the water body. 5. Strong adsorption: high water permeability and strong adsorption.