John Lee points out that companies will have to prepare themselves psychologically. Most of the CFC substitutes or replacement technologies in fact have been known for a long time, but were dispensed with because they could not compete with CFCs.
化工所所長李鍾熙更指出，廠商恐怕要先有心理準備，目前能夠想到的替代品或替代技術，其實大多都是早就曾使用過，卻因為效能比不上氟氯碳化物而被淘汰的。