Fibrous-glass ducts are constructed from fiberglass board and are available in several variations.变式包括但不限于:标准管道板、中高速管道板和环境净化管道板
equartia.com
23 31 16.13Fibros-GlassDucts
mon,2009年8月17日
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消防大坝
雷竞技raybe//www.diesprinter.com/knowledgebase/division-23-heating-ventilating-and-air-conditioning/23-30-00-hvac-air-distribution/23-33-1316-fire-dampers/23-33-1316-fire-dampers
雷竞技raybe//www.diesprinter.com/knowledgebase/division-23-heating-ventilating-and-air-conditioning/23-30-00-hvac-air-distribution/23-33-1316-fire-dampers/23-33-1316-fire-dampers
igsrsssssss消防大坝有各种类型,按下列因素分类:如何激活或强制关闭物理约束安装和火定级天花板、楼层或墙被渗透。