INTEGRA

Nonmetal tubular liners for the lining of sewer systems for the repair or reconstruction of existing sanitary sewer and storm sewer passageways by or on behalf of municipalities, cities, states, and other government entities, which are applied against the internal walls of the passageways by pulling the flexible deflated liner into a passageway, inflating the liner, and using steam to cure a resin impregnated in the liner