Chengda's professional analytical R&D and QC team provides customers with quality research and stability research services for APIs, intermediates and registered raw materials that meet the global IND/NDA declaration requirements. The project experience covers all stages from preclinical to commercial, including method development/optimization, analytical method validation/transfer, physical and chemical properties research, structure confirmation, reference standardization, product release test, packaging compatibility research, stability research Research and formulation of quality standards to meet the needs of customers at different stages of drug development.