This is really helpful, I think cut-off or APOS model is more suitable for environmental impact of one ton pig iron. But I am still a little confused, what is the difference between ecoinvent_391_cutoff_upr_regionalized, ecoinvent_391_cutoff_upr_n3_20230629, and ecoinvent_391_cutoff_lci_n2.
Could you recommend some courses about performing LCA of iron and steel? I can pay for them. The training on the official website is not very targeted, not what I want (iron and steel).