China Timing instruments. GB Standards Search Result

and Chinese version GB Standards, you can purchase directly in the web page; After receive your payment, we will send the GB Standards PDF file to your Email within 1~3 days.
2. Other English version GB Standards are not ready translated, only after get your order, then we translate them, time usually need 3-5 days .


	GB/T 42951-2023 Timing instruments. Appearance parts of watches made of hard materials. General requirements and test methods. 计时仪器硬材料制造的手表外观件一般要求和试验方法 - 中英文版

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