China Vacuum technology—St 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 40344.2-2021 Vacuum technology—Standard methods for measuring vacuum-pump performance— Part 2：Positive displacement vacuum pumps 真空技术真空泵性能测量标准方法第2部分：容积真空泵 - 英文版
	GB/T 40344.1-2021 Vacuum technology—Standard methods for measuring vacuum-pump performance—Part 1：General description 真空技术真空泵性能测量标准方法第1部分：总体要求 - 英文版

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