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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)
GB/T 26794-2023_Chinese: Counters for gas meters (Chinese: 燃气表用计数器)
4-2023_Chinese: Petroleum and natural gas industries - Glass-reinforced plastics (GRP) piping - Part 4: Fabrication
English versions: GB/T 45515-2025
N-二甲基甲酰胺的测定 气相色谱-质谱法)
GB/T 21974-2024 Chinese PDF (GB/T21974-2024) GB/T 1149.11-2023 20-2025_Chinese: Methods for chemical analysisGB T 21974 2024_Chinese: YZRW series eddy current braking wound rotor three phase induction motors for crane and metallurgical applications Technical specification (frame size 112315) (Chinese: YZRW 112315) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21974 2024
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