It is especially suitable for the ideal product that penetrates small openings and multiple cables, pipes, and trunking. It is expandable and lightweight, and simple construction-only needs to be cut and fixed. It can be installed with general tools and self-powered teeth. , Anchor screws are punched or fixed by drilling. When the site conditions are unfavorable for plane construction, it can also be hung upside down from under the floor without mixing or purchasing additional underlaying materials. It can be drilled again and the wire-drawing construction can be repeated, which proves that it has excellent weather resistance.