Preservative-treated wood is ordinary wood that has been artificially infused with chemical preservatives, endowing it with properties such as corrosion resistance, moisture resistance, fungal resistance, termite and insect resistance, mold prevention, and water resistance. The two most common types of preservative-treated wood in China are Siberian larch and Northern European red pine. It can be used directly in soil and damp environments, often found in outdoor flooring, construction projects, landscaping, and preservative-treated wooden arbors for people to rest and enjoy the natural scenery. It is an ideal material for outdoor flooring, garden landscapes, wooden swings, recreational facilities, and wooden walkways, and is highly favored by landscape designers. However, with the development of science and technology, preservative-treated wood has become very environmentally friendly and is also frequently used in interior decoration, flooring, and furniture, with interior designers also showing a preference for it. There is also a type of preservative-treated wood without any preservatives - deep carbonized wood, also known as heat-treated wood. Carbonized wood involves the carbonization of the wood's effective nutrients, achieving preservation by cutting off the nutrient chain for the survival of decay fungi.