Until 2010, Suncor marketed products and services to retail customers in Ontario through a downstream network of 280 company-owned, and 200 customer-operated retail and Diesel fuel sites, primarily in Ontario under the Sunoco brand (owing to Suncor having originally been established as a subsidiary of Sunoco). In 2009, Suncor acquired the former Crown corporation Petro-Canada, which replaced the Sunoco brand across its existing outlets. Suncor also markets through a retail network of Shell and ExxonMobil branded outlets in Colorado.[5]