The fireproof materials filled in the steel fireproof door leaf are environment-friendly and pollution-free. The surface treatment process of the door leaf is powder spraying or PVC coating, which are mature environment-friendly processes. According to the different fire resistance of steel fire doors, their fire resistance can be divided into three grades: A, B, and c. Steel fire doors of different grades can be used in various places.

Pintu api ZHTdoors, 31 tahun pengalaman produksi di pintu api dan Windows. Pintu api UL utama, pintu api EN, pintu api BS EN, dll., Kami memiliki sertifikasi. Pintu ZHT mendukung OEM dan desain gratis. Keunggulan kami: kualitas bagus, harga pabrik, pelayanan yang baik. Selamat datang untuk berkonsultasi dengan kami.