Description:<br>1, material: door frame for 1.5mm galvanized cold-rolled steel plate, door fan material for 1.0mm galvanized cold-rolled steel plate, internal filling 53mm magnesium oxide fireproof door core plate<br>2, the hole size 1200 x 2200, three-frame door, no threshold, no pre-buried, installation seam 10mm, door frame size 1180 x 2190.<br>3, door surface for electrostatic spraying
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