Mesaieed Petrochemical Holding Co. QSC engages in the provision of petrochemical business. It operates through the Petrochemicals and Chlor-Alkali segments. The Petrochemicals segment is involved in Qatar Chemical Company Limited and Qatar Chemical Company II Limited. The Chlor-Alkali segment relates to Qatar Vinyl Company Limited. The company was founded on May 29, 2013 and is headquartered in Doha, Qatar.