China National Standards

China Thresholds grading relative GB Standards List

  •  China "Thresholds grading relative" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 39971-2021 Thresholds and grading of relative wet grip index for motor vehicle tyres
    汽车轮胎湿路面相对抓着指数限值和等级    		 China National Standards
    Thresholds grading relative
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