China National Standards

China Analogue quartz clocks—Timing GB Standards List

  •  China "Analogue quartz clocks—Timing" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 38021-2019 Analogue quartz clocks—Timing accuracy
    指针式石英钟 走时精度    		 China National Standards
    Analogue quartz clocks—Timing
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