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The company has a perfect quality assurance system. We implement strict quality control standards and have passed the certification for the ISO9001 Quality Management System. The Quality Management Department is equipped with many sets of high performance liquid chromatography (HPLC) instruments, ultraviolet spectrophotometers (UV), several spectropolarimeters, a gas chromatograph (GC), melting point apparatus, and other advanced testing and experimental equipment. We make a detailed division of labor for technology research, and for quality assurance and quality control, so that we can conduct effective and comprehensive quality control in the production process. This also allows us to make comprehensive detection analysis of final products, thus ensuring products quality.