建筑行業(yè)用于防火卷簾門(mén)、防火門(mén).Used for fireproof roll curtains and fire doors in the building industry.通往樓梯的防火門(mén)本中心已安裝警鈴.All doors of the Centre's exits stairways are alarmed.公路隧道根據(jù)防災(zāi)和營(yíng)運(yùn)時(shí)需要,在人行橫通道內(nèi)都有必要設(shè)置防火門(mén).Fire Door is necessary ...