Class A fireproof doors are especially suitable for those occasions that require fine grinding before electroplating, excellent vibration, mirror polishing of hand tools, mirror polishing of electric heating tubes, etc. Although in terms of purchase cost, Class A fireproof doors are higher than Class B fireproof doors, but in terms of comprehensive use cost, Class A fireproof doors are better than Class B fireproof doors in many aspects.

ZHTdoors branddøre, 31 års produktionserfaring indenfor branddøre og vinduer. De vigtigste UL branddøre, EN branddøre, BS EN branddøre osv. Vi har certificering. ZHTdøre understøtter OEM og gratis design. Vores fordele: god kvalitet, fabrikspris, god service. Velkommen til at konsultere os.