The panel is made of high-quality cold-rolled hard steel plate, and the bottom plate is made of deep-drawn steel plate. After the upper and lower steel plates are stamped and spot welded, they are treated with phosphating and spraying. The middle hollow shell is filled with high-quality high-strength foamed cement, which forms a stable load after curing. Structure, with corner keyholes at the four corners, the minimum ideal finish height can be 6CM, on the basis of standard network floor, you can add wire slots around according to actual usage requirements for wiring!