Network raised floor is made of good quality cold-rolled steel sheets which are punched ,spot-welded ,coated with solid resin rounded with oxygen Inside of the panel is filled with foamed cement .the wide of the panel is 15mm ,the concave (3mm) is for installing the pedsta and there is four M12 screw bars . The system is composed of panel, Linking-Base, Central Cover-board, Rim Cover-board,and Bonding Construction. Easy outlet line system,Outlet that neednt any cutting ,Reduced weight :about 2/3 of the HPL Panels ,Safe fireproof: All-steel material.