GB/T 7408.1-2023 Chinese PDF (GB/T7408.1-2023) GB/T 45444-2025 and line pipe threads (Chinese:

and line pipe threads (Chinese: 石油天然气工业 套管、油管和管线管螺纹的加工、测量和检验)

GB/T 45493-2025_Chinese: Requirements of implementation of motor vehicle products recall based on over-the-air update technology (Chinese: 基于远程升级技术的汽车产品召回实施要求)

GB/T 45524-2025_Chinese: Public security - Flammable and explosive gas detection and alarm device (Chinese: 公共安全 易燃易爆气体探测报警装置)

English versions: GB/T 31903-2024

GB/T 19405

GB/T 7408.1-2023 Chinese PDF (GB/T7408.1-2023) GB/T 45444-2025 and line pipe threads (Chinese:GB T 7408. 1 2023_Chinese: Date and time Representations for information interchange Part 1: Basic rules (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 7408. 1 2023