Libra Systems Corporation is a worldwide leader in process control technology for the production of highway materials and the integration of plant data with office management information systems. Libra is dedicated with over 85 percent of its business in the asphalt and aggregate industries. Libra s systems have been chosen by many of the largest and most active producers in the world. The company s significant investments in research and development provides assurance that their products utilize the latest hardware and software technologies, in a manner that benefits the industries they serve. Libra is first to introduce an on-line gateway between office and plants, providing seamless integration of plant production data with office management information systems. Libra Systems has an office in Harleysville, Pa.