He notes that while it is hard to accept the procrastinating attitude of some companies, in fact known substitutes for CFCs are not cheap, and the replacement technology is not very mature, so factories worry about whether rushing in to something might not affect product functions, or whether there might not be side-effects.
另一方面，目前已知的氟氯碳化物替代品，價錢不便宜、替代技術也不是很成熟，若貿然採用，會不會影響產品性能、有沒有後遺症，也在在令廠商疑懼。