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Nanjing Spring & Autumn Biological Engineering Co., Ltd. was established in 2008, composed by experienced natural products chemists. The company has a R & D team composed by experienced natural products chemists. The company is a high-tech enterprise engaged in the extraction and separation of chemical compositions from plants, and focusing on the research and production of standard reference materials, pharmacology used natural intermediates, bulk grade natrual products, high purity plant extacts and active parts, TCM intermediates, and TCM crude materials. We have our own chemical research laboratory and 2000 m2 Medium-scale Factory, being committed to R&D innovative small molecule compounds especially anti-tumor, anti-inflammatory, anti-oxidation, anti-aging and metabolism related natural compound monomers, providing the precursor compounds or materials with high purity natural sources for innovative drug research.