White pine, also known as fir pine and spruce, is now one of the precious tree species in China. White pine is a perennial tree, which can grow up to about 45 meters. It has strong adaptability to soil and can grow on cinnamon soil, red loess and red limestone soil.

As sawn timber, spruce is usually traded and used together with fir as a mixed range of spruce/fir; The characteristics of the two kinds of wood are very similar.

Picea crassifolia, also known as Picea crassifolia, Picea crassifolia, Picea crassifolia, Picea crassifolia, etc., is endemic to China. It is widely distributed in the mountains of North China, and also in the Xiaoxing'an Mountains in the northeast.