About Us Original Composites and Fibers is a global leader in glass reinforcement solutions for the composites industry. Recently separated from Owens Corning, we now operate independently under the Praana ownership model, continuing a strong legacy
JT4, LLC provides engineering and technical support to multiple western test ranges for the U.S. Air Force, Space Force, and Navy under the Joint Range Technical Services Contract, better known as J-Tech II. JT4 develops and maintains