GB 27887-2024 Chinese PDF GB/T 45674-2025 English versions: GB/T 45522-2025

English versions: GB/T 45522-2025

2-2024_Chinese: Acoustics - Calibration of hydrophones - Part 2: Procedures for low frequency pressure calibration (Chinese: 声学 水听器校准 第2部分：低频声压场校准方法)

English versions: GB/T 45558-2025

1-2025_Chinese: Technical specification for animal genetic resource survey - Part 1: General (Chinese: 畜禽遗传资源调查技术规范 第1部分：总则)

GB 27887-2024 Chinese PDF GB/T 45674-2025 English versions: GB/T 45522-2025GB 27887 2024_Chinese: Child restraint systems for power driven vehicles (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 27887 2024