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The process and quality inspection process of steel fire doors in the production stage are very strict, only in this way can they pass the inspection before they can be sold.

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single fire door,fire transom doors,fire-rated flush panel door-Ușă ZTFIRE - Ușă împotriva focului, Ușă ignifugă, Ușă rezistentă la foc, Ușă rezistentă la foc, Ușă din oțel, Ușă metalică, Ușă de ieșire