Lignin character and use: air-dry density is about 0.66-1.06g/ cm³, with great wear-resistance and anticorrosive, can endure the alternation of climate wonderfully, obvious discrimination in lignin-hue between the core and margin. The lignin-hue of core is golden brown to chocolate with deep color belt-shape stripes. The lumber has luster, no special smell or taste, mid structure and slightly even.