Plug grating by a certain size carbon flat steel, stainless steel by the open bad (hole), plug, welding, finishing processes to create from. With lightweight, high strength, corrosion-resistant, maintenance-free, beautiful and many other advantages, are widely used in civilian and commercial buildings, theaters, metro, suburban railway and other public works areas, can be used for ceiling, indoor and outdoor decoration decoration, platform aisle, ventilation window ( Wells), advertising plaque, such as a variety of cover.