View Larger Image View Larger Image View Larger Image View Larger Image Petroleum oil refinery NISBoris2019-08-12T14:32:09+02:00 Petroleum oil refinery NIS Serbia Maintenance – Mechanical, Electrical, Steel structure, Civil works – Annual Maintenance Contract Project Details Categories: Oil & Gas Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail Related Projects AD Nafta Gazprom Neft