GB/T 25774.3-2023 Chinese PDF (GB/T25774.3-2023) GB/T 45543-2025 measuring or monitoring of protective

measuring or monitoring of protective measures - Part 7: Phase sequence (Chinese: 交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第7部分：相序)

1-2024_Chinese: Graphical symbols for communication support of the elderly - Part 1: Design principles (Chinese: 老年人交流辅助用图形符号 第1部分：表示规则)

English versions: GB/T 23031

English versions: GB/T 13296-2023

English versions: GB/T 45481-2025

GB/T 25774.3-2023 Chinese PDF (GB/T25774.3-2023) GB/T 45543-2025 measuring or monitoring of protectiveGB T 25774. 3 2023_Chinese: Test methods for welding consumables Part 3: Preparation and testing of a fillet weld specimens for T joint (Chinese: 3T) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 25774. 3 2023