Hunan Quankai Biological Technology Co., Ltd. is located in China's only medical professional industrial park --- Changsha National Biomedical Industrial Base. It is a modern biological science, industry and trade enterprise integrating scientific research, production and sales. It is mainly engaged in the development, production and sales of pharmaceutical intermediates, raw materials and other pharmaceutical and chemical products. The company has strong technical force, has a group of experienced senior research and development personnel with doctorate or master degree, and has established close cooperation with scientific research institutions and well-known universities in the United States, New Zealand, Beijing, Hangzhou, Changsha and other places. Products that are currently on the market include D-fluorescein; 4-chloro-3-nitrocinnamic acid; xylpyridinic acid; 3-thiophene malonic acid, etc.