GB/T 19520.22-2023 Chinese PDF (GB/T19520.22-2023) GB/T 45217-2025 5-2024_Chinese: Safety requirements for electrical

5-2024_Chinese: Safety requirements for electrical equipment for measurement

GB 17167-2025_Chinese: General rules for energy measuring instrument equipping and managing of energy user (Chinese: 用能单位能源计量器具配备和管理通则)

“dry” and “wet” conditions (Chinese: 金属和合金的腐蚀 循环暴露在盐雾、“干”和“湿”条件下的加速试验)

English versions: GB/T 23453-2025

English versions: GB/T 43982

GB/T 19520.22-2023 Chinese PDF (GB/T19520.22-2023) GB/T 45217-2025 5-2024_Chinese: Safety requirements for electricalGB T 19520. 22 2023_Chinese: Mechanical structures for electrical and electronic equipment Dimensions of mechanical structures of the 482. 6 mm (19 in) series Part 3 110: Residential racks and cabinets for smart houses (Chinese: 482. 6 mm(19 in) 3 110) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19520. 22 2023