China National Standards

China Intelligent fresh air Industry Standards English PDF List

  •  China "Intelligent fresh air" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    YD/T 1969-2020 Intelligent fresh air energy-saving system for communication bureaus (stations) {译}
    通信局（站）用智能新风节能系统    		 China Telecommunication Industry Standards
    Intelligent fresh air
    English PDF

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