GB/T 24630.1-2024 Chinese PDF (GB/T24630.1-2024) GB/T 29912-2024 GB/T 45239-2025_Chinese: Evaluation methods of

GB/T 45239-2025_Chinese: Evaluation methods of nocturnal blue light radiation hazards (Chinese: 夜间蓝光辐射危害的评价方法)

GB/T 45253-2025_Chinese: Internet psychological services - General specification for evaluation services of psychology (Chinese: 互联网心理服务 心理测评服务通用规范)

English versions: GB/T 31838

3-2025_Chinese: Non-destructive testing - Ultrasonic testing block - Part 3: Calibration block for curved surface (Chinese: 无损检测 超声检测试块 第3部分：曲面检测标准试块)

GB/T 1243-2024_Chinese: Short-pitch transmission precision roller and bush chains

GB/T 24630.1-2024 Chinese PDF (GB/T24630.1-2024) GB/T 29912-2024 GB/T 45239-2025_Chinese: Evaluation methods ofGB T 24630. 1 2024_Chinese: Geometrical product specifications(GPS) Flatness Part 1: Vocabulary and parameters of flatness (Chinese: GPS 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 24630. 1 2024