The concept of integral bathroom:  The integral bathroom is an integral frame made of waterproof chassis, wall panel and ceiling, then it is equipped with an independent sanitary unit composed by various functional sanitary wares. It has three basic functions of bathing, washing, and toileting or combination of other functions. The integral bathroom is an independent structure, which is not fixedly connected with the wall, floor and top surface of the building. It is suitable for brick-concrete structures, reinforced concrete structures, steel structures, bricks and other structural buildings.