The leather sofas currently on the market are mainly leather sofas and main leather sofas (half leather sofas). The national light industry standard for upholstered sofas stipulates that all-leather sofas refer to the bottoms of sofa seats and all use natural animal leather-covered sofas; the main parts of leather sofas refer to sofa seats, backrests, backrests, and the inner side of handrails. On the armrests, sofas covered with natural animal leather are used. Due to the extremely high cost of the full-leather sofa and its practical useless significance, most sofas currently sold in the market are leather sofas unless it is specifically stipulated that the sofa needs to be fully covered. The two materials used in different areas, the price is naturally a lot of difference.