Marsulex Inc. (Marsulex) is a Canada based company. It engages in providing industrial services, primarily environmental compliance solutions for air quality control and industrial hazardous waste streams. The company also involves in the production and marketing of sulfur-based industrial and water treatment chemicals. It holds a significant presence in the oil refining and power generation industries. Marsulex carries out its operations under three operating segments, namely, Industrial Services, Marsulex Environmental Technologies (MET) and Western Markets. The company is headquartered in Ontario, Canada.