Features of manufacture OA full-steel free access floor with wire groove,beside the advantages of the traditional overhead floor,has the following characteristics: Convenient Use: High flexible wire groove system Convenient for connecting wire at any point without cutting floor Adjustable wire-connected location Safety Light Load,only 2/3 of traditional overhead floor load Fire-proof and no flammable for full steel material Independent base for each foundation support floor without whole collapse resulting from earthquake or external force Linitless Elasticity Easy change and remounting for circuit Easy motion High expansion and low cost of maintenance Repeatability-90% of parts can be reused after changing position.