一小時;二小時;四小時防火及隔熱包括煙控鐵結構門 August 15, 2017/in News /by firedoorFRR(-/60/60) (-/120/120) (-/240/240) Fire-Resistance, Fully Insulated, Single-leaf & Double-leaf with Smoke control http://www.firedoor.com.hk/wp-content/uploads/2017/08/logo.png 650 650 firedoor http://www.firedoor.com.hk/wp-content/uploads/2017/01/RR.fw_-300x78.png firedoor2017-08-15 16:27:442017-08-15 16:35:03一小時;二小時;四小時防火及隔熱包括煙控鐵結構門