Located in Shanghai city, Shanghai Hao Yun Chemical Science Co., Ltd. (hereinafter referred to as Hao Yun Chem) is a market-oriented high-tech company focusing on medical research and development. The company mainly engages in pharmaceutical API, pharmaceutical intermediates and fine chemicals. The company has got abundant international chemical resources during the long history of import and export business of pharmaceutical API, pharmaceutical intermediates and fine chemicals, and is committed...