BOM cost based on different cost from different supplier

Here is a use case where i am having steels from different supplier at different price
how can i get the cost of production base on the the price i have bought product from different suppliers

Regards

Tryton does not track cost per supplier but per product using different available method like “fixed”, “average” or “fifo”. This is based on the principle that products are interchangeable. If it is not your case, you must use different products.