The internal structure of the sofa is of reasonable material, the moisture content of the wood is generally 12%, the spring is to be treated with rust prevention, the cushioning material is to be safe and sanitary, and no old material and mildew deterioration mat material is used. At present, springs in sofas are not commonly used or only used at the bottom (such as some American sofas). The product mainly uses sponges and soft fibers. The material has three or more kinds of sponges and soft fibers of different densities to shape The styling and realization of different parts should have different degrees of softness and hardness and overall comfort. The feeling of sitting, touching and pressing feels good and it's great.