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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)
Note/Careful: Text of PDF is in Chinese (not English)
English versions: GB/T 19710
English versions: GB/T 20317-2023
40-2025_Chinese: Requirements of the greenhouse gas emissions accounting and reporting - Part 40: Building waterproof materials enterprises (Chinese: 温室气体排放核算与报告要求 第40部分：建筑防水材料生产企业)
GB/T 20871.61-2024 Chinese PDF (GB/T20871.61-2024) GB/T 17630-2024 1-2024_Chinese: Non-destructive testing - PenetrantGB T 20871. 61 2024_Chinese: Organic light emitting diode(OLED) displays Part 6 1: Measuring methods of optical and electro optical parameters (Chinese: 6 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20871. 61 2024
