The fire endurance of Class B fire door shall not be less than 0.9h. During the installation of fire doors, fire sealant strips will be added at each gap, which can effectively prevent harmful gases from floating outside the door.

ZHTdoors lawang geni, 31 taun pengalaman produksi ing lawang geni lan Windows. Lawang geni UL utama, lawang geni EN, lawang geni BS EN, lan liya-liyane, Kita duwe sertifikasi.ZHTdoors ndhukung OEM lan desain gratis.Kauntungan kita: kualitas apik, rega pabrik, layanan apik. Sugeng rawuh kanggo konsultasi karo kita.