Jun Yi floor Ltd. Changzhou OA500 steel floor for high-quality cold-rolled steel shell, after stretching, spot welding, phosphate, spray, cavity filled with foam cement, corners with corner keyhole. OA500 steel trough floor this feature one can reach any other network existing floor system can not be achieved. After installing the preceding trough natural shape, then you can simply install the cover, complete the installation or wiring cover. Because each floor as an independent support, so after the first wiring or wiring easy and secure.