shandong rongyuan pharmaceutical co.,ltd, established in 2007, is specialized in the manufacturing API, such as trimethoprim(cas no.738-70-5) ,m-bromoanisole(cas no.2398-37-0) for tramaol Hcl, Health products and Bromine compounds, such as n-propyl bromide(cas no.106-94-5),1-bromo-3-chloropropane(cas no.109-70-6),sentitizer for thermal paper,such as bon(cas no.613-62-7).



Although it is young in its age,but not in its produts. The company has become the production base for trimethoprim, ...