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2. Kigali Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer,2016
3. American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE. ANSI/ASHRAE Standard 378-2021: Standard for Refrigerant Safety Classifications.
4. American Chemical Society. HFO refrigerants. https://refrigerants.com/products/refrigerants/.
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