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Organofluorides / Halomethanes / Ozone depletion / American Society of Heating /  Refrigerating and Air-Conditioning Engineers / A1 / Difluoromethane / 1 / 1-Difluoroethane / Dichlorodifluoromethane / 1 / 1 / 1 / 2-Tetrafluoroethane / Refrigerants / Chemistry / Heating /  ventilating /  and air conditioning


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