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GB 51251-2017 第9.4.3条 Technical Standard for Smoke Control and Exhaust Systems in Buildings

Smoke control system equipment消防工程

GB 51251-2017 第9.4.3条

- **** | Air vents shall be made of non-combustible materials. In hotel buildings, all smoke control and exhaust air vents (e.g., aluminum alloy, stainless steel) must meet non-combustible requirements.

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