ID14 Propylene Production ; Propylene ; Coal to Olefins Route ; Coal ; Subordinate Process 5 Users of this data should consider the precision of the input-output data stemming from the company's public environmental impact assessment when applying this information to their LCA models. Ensure the functional unit of 1 ton of propylene product aligns with the system boundaries of your model, and attention should be given to the exclusion of end-of-life treatment, infrastructure construction, and equipment maintenance phases from the scope of the assessment. Furthermore, the environmental load should be allocated between propylene and by-products using the mass distribution method, acknowledging waste discharges from the process.