Shanghai Changer Pharmaceutical Technology Co., Ltd. is a passionate, creative and young company. We have the research and development capacity of milligram level, as well as the production capacity of kilogram to tonnage products. Especially in quinoline derivatives, naphthyridine derivatives and deuterated compounds, we have excellent ability to tackle key problems. In addition, there are many kinds of above compounds in stock ranging from gram level to 100 kg level, as well as process reserve...