Henan Rui'andun Door Industry tells you about wooden fire door_ Why can fire be prevented?
2021-04-20
Why can wooden fireproof door prevent fire? When you hear the word "wooden fireproof door", you must feel very strange. How can wood be fireproof? In fact, there are such fireproof products in fire protection. The wood has been treated with flame retardancy. The commonly used flame retardancy methods of wood include spraying, soaking, cooking, vacuum, vacuum pressurization, etc. Spraying method and immersion method are generally applied to
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