Quality Control: The company has a Quality Assurance Center (QA) and an Analysis and Testing Center (QC), which are responsible for the construction, control and product quality analysis of the quality system. In order to meet scientific research monitoring and quality analysis, control and research of raw materials, intermediates and finished products, the company is equipped with advanced analysis and testing instruments, including high performance liquid chromatography (HPLC), gas chromatography (GC), UV-Vis spectrophotometer, Abbe spectrometer and digital display automatic polarimeter, etc.,.