ABS material: The flood control board is made of ABS material and has a coating on the surface. Connecting buckle: facilitates the connection between boards and maximizes the effectiveness of flood control boards. The principle of the L-shaped book baffle: the weight of the water presses on the bottom of the book baffle, and the weight is converted into pressure. Even if the flood rises to the top of the book baffle, the book baffle can still be very stable and will not overturn. The higher the water level, the more reliable the water-blocking effect. Memory fit material: The water-blocking strip on the bottom of the board has a water-locking function, which can prevent water from penetrating. At the same time, the water-blocking strip is used to increase the friction between the bottom and the ground. Wide range of applications: suitable for warehouse entrance, garage entrance, parking lot, office entrance, drainage interception, garage entrance, store entrance, supermarket entrance.