1.Uses
 As biological packing in biological contact oxidation pond and hydrolysis acidification pool.

2.Features
Compare with honeycomb packing, it has features of large hole variability, no blocking. Compare with soft packing, it has advantages of long serve life and non-sticky. And compre with semi-soft packing, it has advantages of large surface specific area and reasonable price.

3.Specification
Diameter: 150mm 180mm 200mm