Exclusively developed with polymer plastic raw materials, it has strong weather resistance and is not easy to age; the color is natural, and the anti-ultraviolet meets the ISO4892-3 standard; it has strong chemical resistance, no corrosion, and extremely low chemical activity. The terminal seat is welded by high-strength metal profiles, the surface is sprayed with plastic, and the neutral salt spray test lasts for 400 hours without rust. Inverted conical chemical anchors are fixed, the surface is Dacromet, and the neutral salt spray test lasts for 1000 hours without rust.