第5 類國家的各類氯氟烴的消費量正在增加，原因是氟氯烴有了新用途，特別是在空調和泡沫塑料絕緣行業，以及《蒙特利爾議定書》要求淘汰氟氯化碳，因為多個行業選擇將這些物質作為各類氟氯化碳和其他受控物質的臨時替換物質。但由於沒有對第5 類國家最終用戶氟氯烴行業分佈的調查，無法評估不同截止日期對多邊基金的影響。
當前截止日期是根據技術進步決定的。採用同樣的標準，在多項用途的替代技術尚未商用時（例如，當前正在確認和優化在泡沫塑料用途中將甲酸甲酯和甲縮醛作為發泡劑；HFO-1234ez 作為發泡劑已在2008 年開始商用），選擇最近的年份作為氟氯烴淘汰項目的截止日期（即2007 年）會比選擇更早的年份看起來更符合第17/7號決定的基本原則。
原文：The current cut-off date was decided on the basis of technological advances. Applying the same criterion, the selection of the most recent year as the cut-off date for HCFC phase-out projects (i.e., 2007) would appear to be more consistent with the underlying principle of decision 17/7 than selection of an earlier year, when alternative technologies for several applications would not have been commercially available (e.g., methyl formate and methylal as blowing agents for several foam applications are currently being validated and optimized; HFO-1234ez as a blowing agent has been commercially launched in 2008).
資料來源：聯合國環境署UNEP/OzL.Pro/ExCom/58/47 2009/06/17
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