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GB/T 20931
GB/T 28185-2025_Chinese: Heat exchange unit for urban heating (Chinese: 城镇供热用换热机组)
1-2024_Chinese: Non-destructive testing - Penetrant testing - Part 1: General principles (Chinese: 无损检测 渗透检测 第1部分：总则)
turning clearance circle and swing-out value test method for motor vehicles and combination of vehicles (Chinese: 汽车及汽车列车最小转弯直径、转弯通道圆和外摆值测量方法)
GB/T 18029
GB/T 28572-2025 Chinese PDF (GB /T28572-2025) GB 31604.62-2025 GB/T 20931GB T 28572 2025_Chinese: Specification and technical parameters of inlet valves for large and medium sized hydraulic turbines (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 28572 2025
