<input id="uauy4"></input> Guangzhou Steel teach you: how to choose exactly Steel Marine rock wool insulation board
A major expansion at first-class fire rock wool board for the wooden structure, due to the poor weather for outdoor use, easy to aging, from the skin, in the wet, corrosive environments swell reliability issues, as well as high-temperature flame grill foaming process resin decomposition of smoke and toxic gases, and therefore the absence of special measures in the tunnel, and people often stay outside the building, not the use of large-scale expansion of class A fire rock wool board. Guangzhou Steel
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