China Dong Fan Chemical Co.,LTD is one of the top high-tech enterprise of the pharmacutical industry in Hangzhou of China. We take producing high-quality products as our first principle, and will follow this principle forever. And our basic policy is to provide our customer quick and perfect product sluotions. All of our staff never stop improving our product and always pay attention to environment protection. We try to build a company that can win customer’s respect and can attain the local government’s concer