China National Standards

China BTB GB Standards List

  •  China "BTB" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 28552-2012 Determination of acid number in transformer oils and turbine oils by BTB method
    变压器油、汽轮机油酸值测定法（BTB法）    		 China National Standards
    BTB
    English PDF

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