Oriented in manufacturing high purity compound and raw material from natura medicine, Integrating the research, manufacturing and sales, Nanjing Spring & Autumn Biotech Limited Company is focused on the extraction and Purification of active ingredient from the medical plant. We are determined to supply our customers with high-quality natural products. The company has a professional research team master in the natural chemistry, plant resources and Pharmacognosy field. We are in the close cooperation with China Pharmaceutical University and Nanjing Medical University in research. We have formulated strict quality standard and quality control (QC) process during the manufacturing to ensure the quality of the products. All the products are double checked by 2 professionals before the storage.