China National Standards

China Gears timekeeping instruments GB Standards List

  •  China "Gears timekeeping instruments" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 22775-2008 Gears for timekeeping instruments - Contrate gears
    计时仪器用齿轮 端面齿轮    		 China National Standards
    Gears timekeeping instruments
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