This section examines Saudi Arabia’s petrochemicals industry, which leverages the Kingdom’s low-cost feedstock advantage to rank among the world’s largest producers. Coverage includes SABIC’s product portfolio and global expansion, specialty and performance chemicals, downstream integration strategies, and circular economy initiatives such as chemical recycling and waste-to-feedstock programmes. Articles analyse how Vision 2030 is driving higher-value manufacturing, joint ventures with international majors, and new industrial complexes designed to capture more of the value chain domestically. The section also addresses sustainability targets, carbon intensity reduction, and the regulatory landscape shaping investment decisions in this critical industrial pillar.