Shenzhen Chenggong Trade Co., Ltd. supply Calcium Aluminate for water treatment. Type A Chemical Indexes: Al2O3 53-56%, CaO 31-35%, Fe2O3 3.0%Max; Acid Solubility 85.0%Min; Fineness (residue on 0.08mm sieve): 5.0%Max. Type B: Chemical Indexes: Al2O3 56%Min, CaO 28-31%, Fe2O3 2.5%Max; Acid Solubility 90.0%Min; Fineness (residue on 0.08mm sieve): 5.0%Max. You can search us in the web site of Google or visit for details. Fax +86-755-25403739,