Eucommia ulmoides Oliv is the Chinese native valuable non-timber species, which is planted in 26 provinces from sub-tropic zones to worm-temperate zones in China. The bark of Eucommia ulmoides Oliv is a unique eximious herbal medicine and an important material for exporting of China. It is in the first category of Chinese herbal medicine, which can make physique muscular, benefit for liver as well as for kidney, and prevent from aging after long time taking. With straight trunk, beautiful shape of the tree,...