Abstract: A prefabricated wall with a ventilation mechanism is provided in the present invention. Generally, it includes a ventilation mechanism that lets air exchange in a room from the wall. People can adjust the inlet airflow with a controller. The ventilation mechanism has several holes on the outer surface which face to outside. The outdoor air can pass through the holes and filter into the inner room, consequently fulfilling the function of the ventilation duct. The room equipped such a prefabricated wall does not rely on an HVAC system to have fresh air exchange.

Abstract: The present invention provides a collapsible building frame structure, which is a cuboid or a cube, comprising: 8 corner units, each corner unit has two horizontal rods and a vertical rod, the horizontal rods and the vertical rod are perpendicular to each other, and the vertical rods of every two vertically adjacent corner units are connected and fixed to each other; and a plurality of horizontal sleeve rods, which are hollow rod bodies, and the horizontal sleeve rods are arranged between any two horizontally adjacent corner units, and two ends of the horizontal sleeve rods are respectively for the horizontal rods of the two horizontally adjacent corner units to be inserted, and move within the horizontal sleeve rods to adjust the size of the collapsible building frame structure. Through those structure, the workers can quickly construct a frame structure for a building, which can significantly improve the construction efficiency.

Abstract: The present invention provides a foldable and framed wall assembly comprising: a wall frame and at least one wall skin, the wall frame including an upper beam, a lower beam, at least one middle beam, and multiple short rods to connect the upper beam, the lower beam, and the middle beam together. In addition, the wall frame can be folded up for easy transportation and handling, and the wall skin has conventional building acoustic and thermal insulation material attached to the inside and a latch to connect with the frame and looks basically indistinguishable from normal wall skin after installation. Through those structure, the workers can quickly build a wall with strength not much different from a normal wall, while the foldable frame ensures that the wall can be prefabricated in advance in the factory, which can also significantly improve the transportation efficiency.