My company,Maoyuan Biochem,is introduced as the largest manufacturer of anti-cancer APIs (camptothecin &derivatives) in China and our supplying covers 80% of Chinese market. Camptothecin 98% 99% 10-hydroxy camptothecin 99% 7-ethyl-10-hydroxycamptothecin 99% 7-ethylcamptothecin Paclitaxel 99% Bulk quantity p Show More...