Holly Refining Co. is an independent petroleum refiner operating in the United States, with a presence in the mid-continent, southwestern, and Rocky Mountain regions. Its subsidiaries under HollyFrontier specialize in producing and marketing a wide range of petroleum products, including gasoline, diesel, jet fuel, asphalt, heavy products, and specialty lubricants.
As part of its operations, HollyFrontier also owns Petro-Canada Lubricants Inc., located in Mississauga, Ontario, which is responsible for producing base oils and specialized lubricant products, with a daily output of 15,600 barrels.
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