ZHM provides steel structure, cladding, insulation, gantries, doors,windows, ventilation.etc ... any weather.Also the prefab house has advantage of is fire-proof, heat/cold-insulation, non- ... produce and install different kinds of prefab house which has a good framework.They are safe, easy to ... Low foundation cost, thanks to the light weight of the structure itself 3) Easy construction, time-saving, and ...