The panel of type 6123 raised perforated floor is die-cast with aluminum material. So the panel is handy, light, strong impact resistant, waterproof and strong anticorrosion. The stringers under the panel prevent magnetic disturbance and improve the anti-earthquake proof performance. This type of perforated floor is supported with corner-lock freestanding understructure system. Its pedestal is with aluminum head. The ribs(axles) are placed in the tube of pedestal to improve its loading performance. Its axle loading is around 7200kg with the pedestal height of 70cm. The open ratio can be between 18% and 55% to meet various perforated purpose. It is widely used at computer room, high grade classroom, high grade hotel and telecommunication center.