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GB/T 25503-2024 Chinese PDF (GB/T25503-2024) GB/T 45121-2024 GB/T 33665-2023_Chinese: Technical requirements and

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GB/T 33665-2023_Chinese: Technical requirements and detecting method of audio and video for digital publication (Chinese: 数字出版物声频视频技术要求及检测方法)

English versions: GB/T 1149

GB/T 9445-2024_Chinese: Non-destructive testing - Qualification and certification of personnels (Chinese: 无损检测 人员资格鉴定与认证)

GB/T 30268

GB/T 25503-2024 Chinese PDF (GB/T25503-2024) GB/T 45121-2024 GB/T 33665-2023_Chinese: Technical requirements andGB T 25503 2024_Chinese: Requirements in sell and market service of city gas burning appliances (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 25503 2024

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