GB/T 23921-2023 Chinese PDF (GB/T23921-2023) GB/T 21833.3-2024 English versions: GB/T 20195-2024

English versions: GB/T 20195-2024

3-2024_Chinese: General technical requirements for agricultural internet of things - Part 3: Aquaculture (Chinese: 农业物联网通用技术要求 第3部分：水产养殖)

GB 4351-2023_Chinese: Portable fire extinguishers (Chinese: 手提式灭火器)

1-2024_Chinese: Geometrical product specifications(GPS) - Roundness - Part 1: Vocabulary and parameters of roundness (Chinese: 产品几何技术规范（GPS） 圆度 第1部分:词汇和参数)

5-2024_Chinese: Fasteners surface treatment - Part 5: Zinc thermal diffusion coatings (Chinese: 紧固件表面处理 第5部分：热扩散渗锌层)

GB/T 23921-2023 Chinese PDF (GB/T23921-2023) GB/T 21833.3-2024 English versions: GB/T 20195-2024GB T 23921 2023_Chinese: Tri wheel vehicles Axle shaft (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 23921 2023