Global Environmental Consulting, 223 W Michigan Ave, Clinton, MI 49236, US

Located in Mason, Mich., Safety-Kleen Systems Inc. develops a variety of specialized equipment and cleaning products for providing environmental services, including recycling and waste management. Its product line includes an array of environment-friendly oil products, windshield cleaners, antifreeze/coolants, cleaning equipment and a range of other cleaning products. In addition, the company provides various factories, workshops and retail outlets with services, such as oil collection, waste management, equipment services, total project management, compliance, vac services and emergency response. Safety-Kleen Systems Inc. owns and operates one of the largest re-refineries of used oil in North America, with a capacity to recycle more than 200 million gallons of used oil annually.