Heritage-Crystal Clean, Inc., through its subsidiary, Heritage-Crystal Clean, LLC, provides parts cleaning, and hazardous and non-hazardous waste services to small and mid-sized customers in the manufacturing and vehicle maintenance sectors. It operates in two segments: Environmental Services and Oil Business. The Environmental Services segment offers parts cleaning, containerized waste management, vacuum truck, and antifreeze recycling services. This segment also provides oily water disposal and treatment, oil filter recycling, on-site cleaning, and waste management services, as well as sells solvents, machines, absorbents, and accessories. The Oil Business segment collects used oil and sells recycled fuel oil, as well as engages in the re-refining of used oil into lubricant base oil and by-products. This segment also collects and disposes waste water. As of January 03, 2015, the company operated through 84 branches serving approximately 100,000 customer locations. Heritage-Crystal Clean, Inc. was incorporated in 2007 and is headquartered in Elgin, Illinois.