In the use of electric beds, the frequency of back use is higher, and the differences in sleep requirements and sleep schedules lead to more inclined angle adjustment towards the back. Therefore, many customers feel that buying a whole is not free enough, and buying a split body is a bit wasteful. Therefore, separating the back and legs can make the function more practical. Compared to split beds, because two independent motors are used, the price naturally increases. However, when the legs are combined, the same motor is used, so the price is more economical