Table 2. List of the life cycle inventory taken from LCI DB (Ecoinvent v3.10 Cutoff)

Name	Geography	Time period	Note	Reference product	Ref.
Oxygen	South Korea1)	1997-2023	Industrial gases production, cryogenic air separation	Oxygen liquid	[23]
Carbon monoxide	South Korea1)	1997-2023	Carbon monoxide production	Carbon monoxide	[23]
Liquid natural gas	South Korea	2021	Natural gas to consumer	Liquid natural gas	[24]
Power grid mix	South Korea	2022-2025	Electricity, market mix, including transmission and distribution losses; consumption mix, to consumer	Electricity	[20]
Heavy fuel oil	RoW	2014-2023	Heavy fuel oil production, petroleum refinery operation	Heavy fuel oil	[23]
Process water	South Korea	2022-2025	Industrial water, Production mix, production mix, at plant	Industrial water	[20]
Wastewater	RoW	2010-2023	Treatment of wastewater, average	Wastewater, average	[23]

GtoG data is retrieved from Ecoinvent v3.10 and modified by applying geographically representative background LCI.