The group's principal activities are to design, engineer, supply and service air pollution control systems using heat, chemicals and wet and dry scrubbers. The group's operating segments are: air pollution control (heat) and air pollution control (scrubber). The group also develops waste-to-energy process system known as skygas. This process system converts solid and semi-solid wastes like municipal solid waste, municipal sewage sludge, pulp, auto fluff and medical waste into a clean burning medium btu gas. The btu gas can be used for steam production for electric power generation and building block for downstream conversion into valuable chemicals. The group operates in the United States and other foreign countries.