OA network floor is made of good quality cold-rolled steel sheet with foaming cement fully filled. The bottom is high quality deep stretch coil steel plate. The top is cold rolled hard plate. The top steel plate and bottom steel plate are spot-welded to form a high quality shell. The shell is treated by phosphate and painted with epoxy powder coating. Then foaming cement will be filled into the shell. After curing, the structure will be stable and strong to support the designed loading capacity . The access floor panel has high strength and high durability.