Trifluoroethane transparent background PNG cliparts free download
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1,1,2-Trichloro-1,2,2-trifluoroethane Chlorofluorocarbon 1,1,1-Trichloro-2,2,2-trifluoroethane 1,1,1,2-Tetrafluoroethane Ozone depletion, others transparent background PNG clipart
