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20-2025_Chinese: Methods for chemical analysis of tungsten concentrates - Part 20: Determination of mercury content - Solid sampling and direct mercury analysis method (Chinese: 钨精矿化学分析方法 第20部分：汞含量的测定 固体进样直接测定法)
English versions: YY/T 1585-2024
English versions: GB/T 45586-2025
17-2024_Chinese: Safety requirements for electrical equipment for measurement
GB/T 12385-2025_Chinese: Standard test methods for sealability of gaskets for pipe flanges (Chinese: 管法兰用垫片密封性能试验方法)
GB/T 1677-2023 Chinese PDF (GB/T1677-2023) GB 44246-2024 20-2025_Chinese: Methods for chemical analysisGB T 1677 2023_Chinese: Determining the epoxy value of plasticizers (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 1677 2023
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