Expandable House/Foldable House Expandable box-type modular house, which includes a box module, foldable roof module; stated box module features a box-kind steel structure frame, a base plate set around the steel structure frame, a first hill wall, a 2nd hill wall Positioned on either side from the steel structure frame https://arthurbdefh.blogdal.com/31636786/getting-my-environment-easy-install-portable-office-folding-container-house-to-work