Xuzhou Tianjia Edible Chemical Co., Ltd. (Tianjia Chemical for short) is a phosphorous chemical enterprise restructured from Xuzhou Chemical No. 3 Plant, which was established in 1966. It has more than 50 years of phosphate production history. Demand began to shift to the research and development of food-grade phosphates. At present, there are two series of industrial grade and food grade sodium phosphate, potassium salt, calcium salt and aluminum salt, with more than forty varieties.