The three layers of wood are laminated in a crisscross pattern. The force directions of adjacent solid wood boards are perpendicular, which can effectively counteract the internal stress of the wood, greatly enhance the stability of the floor, and reduce the possibility of shrinkage, expansion and deformation. Wood is a renewable natural material. Three-layer solid wood composite flooring only uses precious trees on the surface, reducing the consumption of precious wood and conforming to the concept of environmental protection. Meanwhile, high-quality three-layer solid wood composite flooring usually uses eco-friendly adhesives, with an environmental protection grade that can reach ENF level, which is harmless to human health. It has excellent heat preservation, heat insulation, sound insulation and sound absorption performance, with a moderate thermal conductivity. It is not hot and dry in a geothermal environment, which can create a comfortable and quiet atmosphere indoors. It can also regulate the indoor temperature and humidity, making the living environment more comfortable. Avoid scratching the floor with heavy metal sharp objects, glass or porcelain shards and other hard items. At the same time, prevent the floor from coming into contact with open flames or being placed with high-power electric heaters.