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GB 21257-2024_Chinese: Norm of energy consumption per unit production of caustic soda
GB/T 45435-2025_Chinese: Technical requirements and test methods of BeiDou airborneequipment for aviation supplemental navigation (Chinese: 航空辅助导航北斗机载设备技术要求和测试方法)
GB/T 33555-2025_Chinese: Cleanrooms and associated controlled environments - Technical requirements of electrostatic control (Chinese: 洁净室及相关受控环境 静电控制技术要求)
GB/T 13871
GB/T 18779.2-2023 Chinese PDF (GB/T18779.2-2023) GB 17927-2024 GB 21257-2024_Chinese: Norm of energyGB T 18779. 2 2023_Chinese: Geometrical product specifications (GPS) Inspection by measurement of workpieces and measuring equipment Part 2: Guidance for the estimation of uncertainty in GPS measurement, in calibration of measuring equipment and in product verification (Chinese: (GPS) 2GPS) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18779. 2 2023
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