China National Standards

China subgrade GB Standards List

  •  China "subgrade" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 35453-2017 Rigid polyurethane foam board for frozen soil subgrade (DLPU)
    冻土路基用硬质聚氨酯泡沫板（DLPU）    		 China National Standards
    subgrade
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