The thickness of steel fire door leaf is divided into three standards, namely, Party A, Party B and Party C, with excellent sound insulation and heat insulation performance; The steel fireproof door can be provided with window, shutter, ventilation shutter, etc. as required.

ZHTdoors pòt dife, 31 ane eksperyans nan pwodiksyon nan pòt dife ak fenèt yo. Pwensipal UL dife pòt yo, EN dife pòt yo, BS EN dife pòt yo, elatriye,.Nou gen certification.ZHTdoors sipòte OEM ak konsepsyon gratis.Avantaj nou yo: bon kalite, pri faktori, bon sèvis.Byenveni pou konsilte nou.