英文名称: | 1-Butene, 4-bromo-3,3,4,4-tetrafluoro-, polymer with 1,1-difluoroethene, tetrafluoroethene and trifluoro (trifluoromethoxy) ethene | 1-butene, 4-bromo-3,3,4,4-tetrafluoro-, polymer with 1,1-difluoroethene, tetraf | luoroethene and trifluoro(trifluoromethoxy)ethene | 1-butene, 4-bromo-3,3,4,4-tetrafluoro-, polymer with1,1-difluoroethene, tetrafluoroethene andtrifluoro(trifluoromethoxy)ethene | 1-Butene,4-bromo-3,3,4,4-tetrafluoro-,polymer with 1,1-difluoroethene,tetrafluoroethene and trifluoro(trifluoromethoxy)ethene |
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