China National Standards

China Protective airtight door Industry Standards English PDF List

  •  China "Protective airtight door" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    NB/T 10949-2022 Protective airtight door for refuge chamber {译}
    避难硐室用防护密闭门    		 China Energy Industry Standards
    Protective airtight door
    English PDF

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