STC/RW50 60分鐘防火隔音門 June 22, 2017/in AFDoor Project /by firedoor會議室 – Stc/Rw50 60分鐘防火隔音門 Conference Room – 60 mins Fire-rated and STC/RW50 Sound-proofing Double-leaf Door http://www.firedoor.com.hk/wp-content/uploads/2017/01/RR.fw_-300x78.png 0 0 firedoor http://www.firedoor.com.hk/wp-content/uploads/2017/01/RR.fw_-300x78.png firedoor2017-06-22 17:21:142017-06-22 17:41:11STC/RW50 60分鐘防火隔音門