GB/T 28547-2023 Chinese PDF (GB/T28547-2023) GB/T 45574-2025 English versions: GB/T 45022-2024

English versions: GB/T 45022-2024

English versions: GB/T 45546-2025

GB/T 45440-2025_Chinese: E-commerce housekeeping - Ability information description of housekeeping service personnel (Chinese: 电子商务家政 家政服务人员能力信息描述)

2-2024_Chinese: Cast iron pipe flanges - Part 2: Class designated (Chinese: 铸铁管法兰 第2部分：Class系列)

English versions: GB/T 45301-2025

GB/T 28547-2023 Chinese PDF (GB/T28547-2023) GB/T 45574-2025 English versions: GB/T 45022-2024GB T 28547 2023_Chinese: Selection and application recommendations of metal oxide surge arresters for a. c. systems (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 28547 2023