Profile: Engineered Fiberglass Composites, Inc. specializes in producing fiberglass composite buildings. Our products include all weather type fiberglass composite buildings, all weather molded one piece fiberglass composite buildings and fiberglass reinforced polyester parshall flumes. Our quality fiberglass composite buildings designed for all-weather, year-round protection of equipment and/or instrumentation. We offer a full line of high quality Parshall flumes designed for use in the metering of liquids in open channels and are also used in pipeline applications.