Weifang Zhengyang Chemical Co., Ltd. (formerly Qingdao Jiaozi International Trade Co., Ltd.) was established in 2018,specializes in supplying Sodium Metabisulphite, Sodium Sulphite Anhydrous, Magnesium Carbonate, Ammonium Bicarbonate, Sodium Bicarbonate, Sodium Carbonate, Sodium Bisulphite, Soda Ash, Calcium Chloride etc. Contact us: +8615065607933 Email: [email protected]