GB/T 20840.11-2025 Chinese PDF (GB /T20840.11-2025) GB/T 22251-2024 English versions: GB 30367-2025

English versions: GB 30367-2025

English versions: GB/T 21666-2025

English versions: GB/T 17215

GB/T 11730-2025_Chinese: Rural domestic water quantity (Chinese: 农村生活饮用水量)

99-2025_Chinese: Instrument transformers - Part 99: Glossary (Chinese: 互感器 第99部分：术语)

GB/T 20840.11-2025 Chinese PDF (GB /T20840.11-2025) GB/T 22251-2024 English versions: GB 30367-2025GB T 20840. 11 2025_Chinese: Instrument transformers Part 11: Additional requirements for low power passive voltage transformers (Chinese: 11) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20840. 11 2025