1. Water-treatment aluminium sulphate       SPEC （ I ） :       Al 2 O 3 : 16.0%min                 Fe: 0.45%max       PH: 3.0min       As: 0.0005%max       Pb: 15mmmax       Water Insolubles: 0.15%max       Grain size: 0.002%max               SPEC （ II ）：               Al 2 O 3 : 17%min       Fe: 0.5%max       PH: 3.0min       As: 0.0005%max       Pb: 0.002%max       Water Insolubles: 0.15%max       Grain size: 2---5mm       Use: Treatment for the drinking water and water for industrial use. Packing: PP/PE 50kg/bag         2. Industrial aluminium sulphate       SPEC （ I ） :       Al 2 O 3 : 16.0%min       Fe: 0.45%max       PH: 3.0min       Water Insolubles: 0.15%max       Grain size: 15mmmax       SPEC （ II ） :       Al 2 O 3 : 17%min       Fe: 0.5%max       PH: 3.0min       Water Insolubles: 0.15%max       Grain size: 2---5mm       Use: Used in papermaking, printing and dye, tanning leather, fire-fighting equipment, drug and wood preservation, etc. Packing: PP/PE 50kg/bag