Nanjing Zhengyun Chemicals Co., Ltd. is located in Nanjing, Jiangsu Province. After years of hard work, we have accumulated rich experience in production and gradually improved the inspection and testing equipment to ensure product quality and stability. In recent years, we have continued to expand domestic and overseas markets. Our products are sold to Africa, North America, Australia and Southeast Asia and other countries and regions. We have established good trade relationships with foreign investors. Our main products are sodium formate, formic acid, oxalic acid, acetic acid, pentaerythritol, sodium tripolyphosphate, sodium metabisulfite, sodium hexametaphosphate, calcium chloride, aluminum chloride, aluminum sulfate, sodium hydroxide potassium, aluminum hydroxide, zinc oxide, ir..