Assertion: lubricant's substance | /r/ObjectUse | used as perfluorocarbon
Facets:
Source sentences:
text: Following legislative regulations on ozone depleting chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), substances used as substitute refrigerants such as perfluorocarbons (FCs) and hydrofluorocarbons (HFCs) have also come under criticism.