GB/T 21461.2-2023 Chinese PDF (GB/T21461.2-2023) GB 4404.1-2024 3-2025_Chinese: Technical specification for animal

3-2025_Chinese: Technical specification for animal genetic resource survey - Part 3: Cattle (Chinese: 畜禽遗传资源调查技术规范 第3部分：牛)

maintenance and improvement of a GB/T 23331 energy management system (Chinese: 能源管理体系 实施、保持和改进GB/T 23331能源管理体系指南)

English versions: GB 30185-2025

GB/T 13930-2024_Chinese: Water ring vacuum pumps and compressors - Method for measurement of volume flow of gas (Chinese: 水环真空泵和水环压缩机 气量测定方法)

GB/T 20299

GB/T 21461.2-2023 Chinese PDF (GB/T21461.2-2023) GB 4404.1-2024 3-2025_Chinese: Technical specification for animalGB T 21461. 2 2023_Chinese: Plastics Ultra high molecular weight polyethylene (PE UHMW) moulding and extrusion materials Part 2: Preparation of test specimens and determination of properties (Chinese: PE UHMW 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21461. 2 2023