GB/T 45558-2025 Chinese PDF (GB /T45558-2025) GB/T 18376.2-2024 English versions: GB/T 17365-2025

English versions: GB/T 17365-2025

English versions: GB/T 8897

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 45180-2024

4-2024_Chinese: Rubber and plastics size reduction machines - Part 4: Safety requirements for agglomerators (Chinese: 橡胶塑料粉碎机械 第4部分:团粒机安全要求)

GB/T 45558-2025 Chinese PDF (GB /T45558-2025) GB/T 18376.2-2024 English versions: GB/T 17365-2025GB T 45558 2025_Chinese: General rules for metadata of meteorological observation (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45558 2025