Cheng Shu Biotechnology Co., Ltd. is engaged in the research and development business of chemical reference substances and impurity reference substances of traditional Chinese medicine. The company adheres to the principle of "practical and honest", and can provide thousands of chemical reference substances and impurity reference substances of Chinese medicine. Relying on the abundant resources of Chinese herbal medicine plants in the southwest region, the company conducts research on the preparation technology of Chinese medicine chemical reference substances and impurity reference substances, and provides technical services in the research of chemical substance basis and quality of Chinese medicine. The company has a strong technical force, with two Ph.Ds and more than 80% of the technicians with a master's degree. It has HPLC, HPLC-ELSD, multiple sets of medium and high pressure preparative chromatography systems. While independent research and development, the company conducts technical cooperation and business exchanges with many research units and technology companies. "Actually based, honesty-based"; contributing to the cause of health" is the goal and responsibility pursued by our company! Company business scope: 1. Develop and sell various Chinese medicine chemical reference substances; 2. Develop and sell various impurity reference substances; 3. Sales of China National Inspection Institute, USP, EP Pharmacopoeia standard products and various imported reference products; 4. Preparation and development of natural product monomers from grams to kilograms; 5. Preparation and development of impurity reference substance at milligram level to gram level; 6. Separation, identification and quality research of chemical components in Chinese herbal medicine system;