The stratospheric ozone layer plays a crucial role in protecting living organisms against ultraviolet radiation. Chlorofluorocarbons (CFC) contained in metered-dose inhalers (MDIs) contribute to ozone depletion and in accordance with the Montreal Protocol on Substances That Deplete the Ozone Layer established 10 years ago. phase-out strageies have been developed worldwide for this cat... https://www.allfixelectricales.shop/product-category/o-ring-kit/