Speed Up the Application of CFC-free MDIs to Protect Ozone Layer of the Earth: Inhalation Therapy, CFC-free MDIs and Chinese Action of Phase-out CFC-MDIs

According to the Montreal Protocol, because of the depletion to the ozone layer of the earth, CFCs was required to be phased out by the international society. While consideration of the specific circumstances of Chinese MDI industry and the progress of CFC phase-out efforts, Chinese government issued the National Transition Strategy for the phase-out of CFCs used in MDI, to swiftly and reasonably phase out CFC-MDIs, as well as to speed up the application of CFC-free MDIs. This review focuses on the classification of inhalers, the current situation of HFA-MDIs and the Chinese action plan of CFC-MDI phase-out.