Hevea brasiliensis is the trunk of the tropical tree Hevea brasiliensis, which is planted in Hainan Island. When the rubber tree grows up, it cuts rubber every year and cuts a slightly downward semicircle on the trunk with a knife. The juice flowing out is primary rubber, which is the raw material for making rubber. Generally, after a few years, the trees are old, and they no longer produce rubber or have little output. You can use its trunk as furniture, the material is very general.

Oak is the wood of an oak tree. Oak, also known as oak and oak, is cold-resistant. In winter, the leaves turn reddish brown and will not fall. It is not until the new leaves grow in spring that the old leaves fall. There are many in Daxinganling. Tussah leaves are feed for raising tussah. In Daxing 'anling, people put silkworm babies on oak trees in the mountains to grow naturally. Its acorns are a bit like hazelnuts, but people can't digest them, but they are good feed for pigs. In autumn, when the fruit is ripe and falls to the ground, people drive the pigs to the mountains to eat. Oak wood is hard and not easy to deform, especially different from other tree species, and its wood core is also hard. Its stump is very suitable for cutting into vegetable piers and is a good material for making furniture. However, there are not many oak trees in our country. A big fire in Daxing 'anling lost many oak trees and Korean pine. There are few mature forests now, and logging is basically prohibited. At present, oak wood available on the market is divided into red oak and white oak, most of which are imported from the United States, and the price is extremely high. Therefore, the real oak furniture on the market is expensive and belongs to high-grade furniture.