UL 555防火阀试验
日期:2020-03-25 13:29
l Council for Business Opportunities ICBO)统一机械条款以及国际机械器具条款等装设标准来使用。
The fire dampers covered by these requirements are intended for installation in accordance with the National Fire Protection Association Standard for Installation of Air-Conditioning and Ventilating Systems, NFPA 90A, the International Mechanical Code and the Uniform Mechanical Code.
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