GB/T 20657-2022 Chinese PDF (GB/T20657-2022) GB/T 15579.1-2024 256-2025_Chinese: National food safety standard

256-2025_Chinese: National food safety standard - Determination of Phosphates in Foods (Chinese: 食品安全国家标准 食品中多种磷酸盐的测定)

6 mm (19 in) series - Part 3-108: Dimensions of R-type subracks and plug-in units (Chinese: 电气和电子设备机械结构 482

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 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)

1）第2部分：信息客体规范)

GB/T 20657-2022 Chinese PDF (GB/T20657-2022) GB/T 15579.1-2024 256-2025_Chinese: National food safety standardGB 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