帮助中心

[2,2-Difluoro-2-[1,1,2,2-tetrafluoro-2-[1,1,2,2-tetrafluoro-2-(1,1,2,2,3,3-hexafluorobutoxy)ethoxy]ethoxy]ethyl] (2-oxo-1,3-dioxolan-4-yl)methyl carbonate


联系我们
咨询反馈