Nanjing Datang Chemical Co., Ltd. is a research, production and trade complex enterprise specializing in developing and selling the advantageous products of fine chemical industry. We aim to be your preferred business partner and we have good feeling for responsibility and mission. We now mainly produces 4 series of products, including aromatic hydrocarbon sulfonic acid ,sulfonating Phenol derivatives, custom chromatographically pure(HPLC) and special-purposed auxiliary agent. Most of them are developed by ourselves independently. Most of ...