Changzhou Yao's Tongde Chemical Co., Ltd. is a share-holding corporation established in 1997. We are an ISO9002 certified enterprise engaged in the research, development, production and application of water treatment drugs. With rich technical experience and advanced production technology, we have implemented comprehensive quality control and management systems in order to ensure that the highest standards are maintained.



Constantly enlarging our production scale, we are committed to promoting our presence in the global water treatment market. Having received governmental...