Zhejiang Yongning Pharmaceutical Factory, founded in 1974, is a leading pharmaceutical manufacturer for semi-synthetic antibiotics and intermediates of Cephalosporins, which have manufacturing bases in zhejiang of China and the marketing network in Hong Kong. The main products is semi-synthetic antibiotics like Amikacin, Cefotaxime, Ceftriaxone, Cefuroxime, Cefepime and their preparation, and also the intermediates of Cephalosporins like Cefazolin, Ceftaxime, Ceftriaxone, Cefotiam, Ceftazidime, Cefuroxime and Cefixime.