Wooden railing is primarily made from preservative-treated wood, which is not a modification process but a protective measure, retaining the inherent physical properties of the wood. The original uses of the wood are maintained in the preservative-treated wood, and its applications are expanded due to the chemical properties of the preservative wood.

Now, preservative-treated wood is widely used in the maintenance and renovation of ancient Chinese architecture, as well as in municipal engineering, parks, and residential communities. It is extensively employed in outdoor woodwork such as preservative wood fences, tree pit railings, wooden perimeter walls, walkways, leisure paths, benches, planters, fences, trash bins, waiting shelters, and scenic bridges. It can also be utilized in indoor decorative pieces.

Due to the varying compositions of different preservatives, it is necessary to differentiate the treatment of wood with various preservatives for different locations.

Treated wood retains the natural, eco-friendly visual, tactile, and auditory properties of wood, while also enhancing its anti-corrosion characteristics and flame retardancy. It is widely used in industries, agriculture (crop support wood), construction, and more. As people's demands for living environments improve, its applications have gradually expanded to wooden别墅, flooring platforms, pergolas, balconies, wooden bridges, garden furniture, flower stands, pots, and various other outdoor wood products, satisfying people's appreciation for nature, simplicity, and unity. Developed countries in Europe and America began using it extensively in the 1950s.