The southcrude distillationunit in Liaohe Petrochemical Company mainlyprocesses high-acid-value, corrosiveand low-freezing-point naphthenic crude oils afterrevamping.
My testing of that car was performed in winter conditions, in low temperatures (well below freezing) and often at highway speeds (occasionally, beyond).
Getting these is tricky, but the researchers hope that cryopreservation that is, deep-freezing at extremely low temperatures will preserve them indefinitely, once they have been obtained.