1.Flexible layout: Door and windows can be assembled in any positions; partition wall panel can be assembled in any transverse axes sites. Stair is assembled in outside. Portable Toilets can customized .
2.Using life: The normal using age is above 15 years.
3.Environmental protection and economy: Prefab toilet design is reasonable, easy to assemble and disassemble, used circularly, low wastage, without building rubbish. Average using cost is less than other kinds of building annually.