The company took the lead in entering the field of inhalation preparation R&D in 2014, conducting literature research on inhalation preparation varieties with market potential, and establishing relevant standards and methods to analyze aerodynamic characteristics (such as fine particles, delivery rate and total delivery volume) and other atomization characteristics. ) indicators to ensure the establishment of a preparation quality evaluation system; at different stages of prescription screening, process research, pilot scale-up and industrialization, technical problems that arise will be solved in a targeted manner according to the different characteristics of the varieties, so that generics of inhaled preparations can be compared with The quality of the reference preparation is equivalent, and research and development of new peptide drugs for inhalation preparations are being carried out. The platform is equipped with complete inhalation characteristics research equipment such as multi-stage impactors, breathing simulators, and laser particle size analyzers; the technical team has a complete R&D system and has accumulated successful R&D experience in different types of atomized inhalation preparations in practice, and has completed The prescription process research and scale-up production of multiple inhalation preparations include albuterol sulfate solution for inhalation, compound ipratropium bromide solution for inhalation, ipratropium bromide solution for inhalation and other varieties have been approved.