Polyhedral hollow ball used for the gas absorption ,water treatment ,deadsorption system.....Size:25mm:weight:1g/pcs Product Name: polyhedral hollow ball Application: Gas absorption,Deadsorption system,scrubbing tower ,water treatment ,removing smoke equipment. Model Specification Number per volumeSpecific areaVoid VolumeDry packing factorD*H mmn/m3m2/m3% Dg7676*76260015092193Dg5050* ...