Aramco Trading, a subsidiary of Saudi Aramco, has inked a supply oil agreement with PKN Orlen, Poland’s leading refiner, Gulf Business reported citing Reuters.

Under the supply agreement, Aramco will supply the refinery with its Arabian crude oil in exchange for a similar volume of high sulfur fuel oil from the refiner.

Signing the agreement comes in line with the company’s plan to balance the distributed oil among its third-party customers and affiliated outlets.