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English versions: GB/T 45242-2025
GB 44240-2024_Chinese: Secondary lithium cells and batteries used in electrical energy storage systems - Safety requirements (Chinese: 电能存储系统用锂蓄电池和电池组 安全要求)
18-2024_Chinese: Safety requirements for electrical equipment for measurement
GB/T 45145-2024_Chinese: Performance and testing requirements of maritime survivor locating devices (Chinese: 人员搜救信标性能和测试要求)
GB/T 45361-2025_Chinese: Light industry machinery - Specifications for extrusion die (Chinese: 轻工机械 挤出平模头技术条件)
GB/T 20657-2022 Chinese PDF (GB/T20657-2022) GB/T 15579.1-2024 English versions: GB/T 45242-2025GB T 20657 2022_Chinese: Petroleum and natural gas industries Formulae and calculations for the properties of casing, tubing, drill pipe and line pipe used as casing or tubing (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20657 2022
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