GB/T 5169.23-2024 Chinese PDF (GB/T5169.23-2024) GB/T 45547-2025 English versions: GB/T 45356-2025

English versions: GB/T 45356-2025

English versions: GB/T 33290

GB/T 26990-2023_Chinese: Fuel cell electric vehicles - Onboard hydrogen system technical specifications (Chinese: 燃料电池电动汽车 车载氢系统技术条件)

2-2024_Chinese: Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis - Part 2: Determining the inclusion ratings of steels by automatic image analysis and stereology (Chinese: 应用自动图像分析测定钢和其他金属中金相组织、夹杂物含量和级别的标准试验方法 第2部分：钢中夹杂物级别的图像分析与体视学测定)

English versions: GB/T 44935-2024

GB/T 5169.23-2024 Chinese PDF (GB/T5169.23-2024) GB/T 45547-2025 English versions: GB/T 45356-2025GB T 5169. 23 2024_Chinese: Fire hazard testing for electric and electronic products Part 23: Test flames 500W vertical flame test method for tubular polymeric materials (Chinese: 23 500W) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 5169. 23 2024