GB/T 42151.4-2024 Chinese PDF (GB/T42151.4-2024) GB/T 2910.7-2025 GB/T 12940-2023_Chinese: Technical specification for

GB/T 12940-2023_Chinese: Technical specification for silver-graphite electrical contacts (Chinese: 银石墨电触头技术条件)

1-2023_Chinese: Plain bearings - Metallic multilayer plain bearings - Part 1: Non-destructive ultrasonic testing of bond of thickness greater than or equal to 0

1-2024_Chinese: Digital fittings - Performance evaluation protocol for systems - Part 1: Virtual human body representation (Chinese: 数字化试衣 系统性能评估 第1部分：虚拟人体表示)

English versions: GB 5009

GB/T 42151.4-2024 Chinese PDF (GB/T42151.4-2024) GB/T 2910.7-2025 GB/T 12940-2023_Chinese: Technical specification forGB T 42151. 4 2024_Chinese: Communication networks and systems for power utility automation Part 4: System and project management (Chinese: 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 42151. 4 2024