Hangzhou Hengyuan Chemicals co., ltd. has more than 15 years of experience in the manufacturing and exporting of Active Pharmaceutical Ingredients ( API) ; API intermediates, Dyestuffs, Dyestuffs....
Hangzhou Lainuo Chemicals Co., Ltd is a high-tech chemical enterprise and the member of China chemical industry association. It is located in Hangzhou which was called the paradise on earth, close to....