allwinWH2 size office is combined with 2*20-foot-container and the main structure is light steel. The inner function area is one office and one washroom. The total area is 30.                               She is portable, secure,  high-level finish, designed to be environmentaly clean, comparatively inexpensive, immediate, flexible and long-term solution that enables you to use your land without investing in a permanent property commitment, quick and easy transportation and installation to any orientation with minimal impact on site.