... .002Sodium(Na),% ≤0.001Ammonium salt(NH4),% ≤ 0.015Contact: Juan Zhao Chongqing Hua'nan Inorganic Salt Chemical Co., Ltd.Tel: +86-23 ... -13752858966 Zip:400063Factory Add: 10 Zhongyaocun, Jiguanshi, Nan'an dist., Chongqing, China High purity Strontium Carbonate