GB/T 29043-2023 Chinese PDF (GB/T29043-2023) GB/T 23327-2025 2-2024_Chinese: Acoustics - Calibration of

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)

GB/T 20818

GB/T 44922-2024_Chinese: Additive manufacturing - Qualification principles - Qualifying machine operators of laser metal powder bed fusion machines and equipment used in aerospace applications (Chinese: 增材制造 鉴定原则 航空航天用金属激光粉末床熔融设备操作人员资格鉴定)

GB/T 45222-2025_Chinese: Requirements for emergency exercise of food safety incidents (Chinese: 食品安全事故应急演练要求)

English versions: GB/T 45636-2025

GB/T 29043-2023 Chinese PDF (GB/T29043-2023) GB/T 23327-2025 2-2024_Chinese: Acoustics - Calibration ofGB T 29043 2023_Chinese: Test method for thermal insulating performance of curtain walls (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 29043 2023