MESCO, Inc. engages in the design, construction, operation, and maintenance of industrial plants, environmental facilities, and energy saving machineries. It operates through the Engineering and Pipes and Materials segments. The Engineering segment deals with the comprehensive planning, design, procurement, construction, and after-sales services of industrial plants. The Pipes and Materials segment engages in the sale and construction of sewage, water supply, tunnel emergency facilities, sound insulation, and shielding materials. The company was founded on February 17, 1964 and is headquartered in Tokyo, Japan.