If you are willing to wholesale quality,Website: , advanced and durable activated alumina defluoridation agent from one of the famous China a-as-ld manufacturers, CHALCO is always at your service. The activated alumina defluoridation agent  Activated alumina defluoridation agent has a large specific surface area, good adsorption performance. It is the ideal filtering adsorption material for water treatment, which can remove the excess fluoride and arsenic in the water. A-AS-04 defluoridation agent specification Chemical composition ％ apparentdensity g/ml ≥ BET m2/g ≥ Pore volume ml/g ≥ crushing strength N/Grain Al2O3 ≥ SiO2 ≤ Fe2O3 ≤ Na2O ≤ L.O.I ≤ 92 0.10 0.04 0.45 8.0 0.65 300 0.4 40（1—3mm） 60（2-4mm）