Advanced 3D Configurator Streamlines Selection, Quoting and Materials Estimation Trex Simplifies Railing Specification with Interactive Design Tool Trex Deck Railing Designer. WINCHESTER, Va., July 30, 2025 (GLOBE NEWSWIRE) -- In an effort to simplify the railing selection process for trade professionals and homeowners, Trex Company [NYSE:TREX], the world’s largest manufacturer of high-performance, low-maintenance composite decking and residential railing, has launched the new Trex® Deck Railing Design ...