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１前言根据１９９５年哥本哈根缔约国第七次会议上的决议，对于CFCs，发达国家已于１９９６年全面禁止使用，发展中国家将于２００５年停止使用；对于HCFCs，规定２００５年减少３５％，２０１０年减少６５％，２０３０年必须停止使用犤１犦。CFCs与HCFCs禁用期限的临近，促使
1 Introduction According to the resolution of the Seventh Meeting of the High Contracting Parties in Copenhagen in 1995, the developed countries banned the use of CFCs in 1996 and the developing countries will cease their use in 2005; for HCFCs, the reduction of 35% in 2005 and 2010 A reduction of 65% must be discontinued in 2030. 犤 1 犦. The imminent closure of CFCs and HCFCs has prompted