Our WPC posts are available in multiple square specifications—100*100mm, 90*90mm, 120*120mm, and 150*150mm—serving as ideal load-bearing structures for building outdoor pergolas, pavilions, fences, and heavy-duty landscape features. Extruded with a high-density solid or thickened structure, they offer exceptional compressive strength, bending resistance, and wind load capacity. The surface can feature realistic wood grain embossing, retaining the substantial texture of natural timber while completely eliminating the flaws of solid wood, such as rot and cracking. The 90*90mm and 100*100mm sizes are suitable for lightweight pavilions and trellises in private gardens, while the larger cross-sections of 120*120mm and 150*150mm are specifically engineered for large public landscapes, commercial terraces, and heavy-duty fencing, providing immense visual tension and structural safety. The entire series is waterproof, moisture-proof, insect-resistant, rot-proof, and UV-resistant, requiring no painting maintenance. They are an outdoor post material that perfectly balances grand architectural aesthetics with long-lasting durability.