Borouge 4 is a major petrochemical expansion project under development at the Ruwais Industrial Complex in Abu Dhabi, United Arab Emirates. Developed by Borouge, the project represents one of the largest industrial investments currently underway in the UAE. The primary objective of Borouge 4 is to expand the company’s polyolefin production by integrating a world-scale mixed-feedstock steam cracker with ADNOC’s refinery. This expansion will increase annual production capacity by approximately 1.4 million tonnes, transforming the Ruwais site into the world’s largest single-site polyolefin production complex.