Dear All, I am a basic user of Open LCA and have a simple question. In ecoinvent database , i cannot find PTFE. For one of the process some quantity of PTFE/Teflon need to be added in input. I have searched in my database as well as Open nexus data base, and filtered it to ecoinvent , but cannot find this particular item. tetrafluoroethylene (TFE) is available though. Can someone guide me please ?