Cinergyco PK Limited, formerly Byco Petroleum Pakistan Limited, is engaged in the production, marketing and sale of petroleum products. The Company is involved in the businesses of oil refining, petroleum marketing, chemicals manufacturing and petroleum logistics. The Company operates two business segments: Oil Refinery Business and Petroleum Marketing Business. The Oil Refinery Business segment is engaged in crude oil refining and selling of refined petroleum products to oil marketing companies. The Petroleum Marketing Business segment is engaged in trading of petroleum products, procuring products from oil refining business, as well as from other sources. It offers liquid fuels, including gasoline, jet fuel, ultra-winterized diesel, furnace oil and bunker fuel; gaseous fuels, including compressed natural gas and liquefied petroleum gas, and lubricants. The Company's subsidiaries include Byco Terminals Pakistan Limited and Byco Isomerisation Pakistan (Private) Limited.