OMV Petrom Petrobrazi Refinery is one of the largest Romanian refineries and one of the largest in Eastern Europe, located in Ploieşti, Prahova County having as a main activity the processing of Romanian oil but also has a separate unit specialised in processing chemical products. The refinery had two processing modules with a nominal capacity of 3.5 million tonnes/year each and a total capacity of 7 million tonnes/year.