Metal fiber can be resistant to heat, quenching, good durability and economical. Unique diamond convex structure of metal fiber surface can form the tiny hot air vortex. It can effective retention on the surface of the metal fiber hot air to more complete heating ceramic plate, warming faster. It also can effective ignition incomplete combustion of fine carbon, greatly improve the combustion efficiency, saves gas. Installation of metal fiber uses elastic installation technology. The air tightness is better and more effective buffer mechanical shocking. It can ensure the safety of the metal fiber.