Product A: Determining product for the co-producing process Dependent co-product                  Product B, in which the dependent co-                   product is utilised Displaced product Figure 5.1 Model for describing system expansion and delimitation for joint production, valid both when product A and product B is the product used in the life cycle study.   Process A:   Co-producing process Process I: Intermediat e treatment Process D: Displaced process or sub-system (most sensitive supplier) Process B, in which the dependent co- Process W: Displaced waste treatment of dependent co-product