1、 Vision: the log material gives people a sense of harmony in vision, because the wood can absorb ultraviolet rays (below 380nm) in the sun, reducing the harm of ultraviolet rays to human body. At the same time, wood can reflect infrared rays (over 780nm), which is one of the direct reasons why log stairs make people feel comfortable.

2、 Touch: the feeling of human body to the surface of material is mainly determined by the thermal conductivity of the material. Materials with large thermal conductivity, such as concrete components, present cold touch; the small thermal conductivity of polystyrene foam is warm. wood gives people the most warm moderate feeling.

3、 Hearing: when the sound wave acts on the wood surface, one part is reflected, the other part is absorbed by the vibration of the wood itself, the other part is penetrated. 90% of the reflected sound wave is soft medium low frequency sound wave, while the absorbed sound wave is harsh high frequency sound wave. Therefore, in our living space, appropriate use of wood can make us feel the harmony of hearing.

4、 Moisture regulation characteristics: the moisture regulation function of wood is one of its unique characteristics. When the surrounding humidity changes, the wood itself can absorb release water to obtain the equilibrium moisture content, which can directly alleviate the change of indoor space humidity