GB/T 7408.1-2023 Chinese PDF (GB/T7408.1-2023) GB/T 45444-2025 English versions: GB/T 8300-2025

English versions: GB/T 8300-2025

English versions: GB/T 8545-2024

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)

supplied electronic controlgear for LED modules (Chinese: 光源控制装置 第2-13部分：LED模块用直流或交流电子控制装置的特殊要求)

3-2025_Chinese: Information technology - Virtual reality content representation - Part 3: Audio (Chinese: 信息技术 虚拟现实内容表达 第3部分: 音频)

GB/T 7408.1-2023 Chinese PDF (GB/T7408.1-2023) GB/T 45444-2025 English versions: GB/T 8300-2025GB 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