Wood can be classified as coniferous wood and hardwood in two categories. FIR and pine, spruce, and fir trees are coniferous tree material oak, ash, camphor, Sassafras and birch, wood and Poplar are hardwood. Chinese tree lot, so often used in engineered wood differ in various regions. Mainly in the northeast of Pinus koraiensis and Larix (yellow pine), Picea jezoensis, spruce, ash; Yangtze River drainage area in Cunninghamia lanceolata and Pinus massoniana; Southwest and Northwest are mainly FIR, spruce and hemlock.