China National Standards

China Timekeeping instruments—Designs dimensions GB Standards List

  •  China "Timekeeping instruments—Designs dimensions" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 34839-2017 Timekeeping instruments—Designs and dimensions of crowns and sealed tubes
    计时仪器 柄头和密封管的设计和尺寸    		 China National Standards
    Timekeeping instruments—Designs dimensions
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