Hydrocarbon Technologies, Inc., a subsidiary of Seven Group Holdings Ltd., is a company headquartered in Lawrenceville, NJ, that produces petroleum, fuels, catalysts, petrochemicals, hydrocarbons, gases, crude assays, coals, and residues. It was acquired by Headwaters, Inc., now a subsidiary of Seven Group Holdings Ltd. on August 29, 2001 for $8.33 million.