Poland's PKN says quality of Russian oil generally deteriorating  Reuters AfricaThe quality of Russian crude oil, which was hit by a contamination crisis earlier this year, is deteriorating in general, an official at Poland's biggest refiner PKN …

Poland's PKN expects to receive normal quality oil from Russia soon  ReutersPoland's state-run oil refiner PKN Orlen expects to receive normal quality product from Russia within the next fortnight, the company's deputy CEO said on ... Read more h …