THG Corporation specializes in the distribution, primarily in New England, of motion-control products including hydraulic and pneumatic systems, generators, compressors, and control boxes. THG also manufactures sealing devices and fluid connectors, such as hoses, fittings, and valves. THG is the parent to The Hope Group, which is comprised of member companies: Hope Air Systems, Sorensen Systems, The Leen Company, and Bosworth Fluid Connectors. Certain of The Hope Group subsidiaries operate five Parker Stores, which carry Parker Hannifin products. Principal owners include brothers Carey and Peter Rhoten.