Partition board can be used in large construction projects such as office buildings, residential buildings, and rural distractions, not only for internal wall partitions, but also for external walls, Partition board can be said to be low cost and easy to install compared to other raw materials. Since the panels have concave and convex grooves on both sides, the panels only need to be spliced horizontally and vertically. The panels also fully expand the space and area of the house.