GB/T 29043-2023 Chinese PDF (GB/T29043-2023) GB/T 23327-2025 GB/T 20818

GB/T 20818

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)

general maintenance and safety requirements and out-of-service conditions (Chinese: 道路车辆 车轮和轮辋 使用、维护和安全的一般要求及报废条件)

GB/T 23025-2024_Chinese: Integration of informatization and industrialization management systems - Classification and application guidelines for production equipment operation control information models (Chinese: 信息化和工业化融合管理体系 生产设备运行管控信息模型分类与应用指南)

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 29043-2023 Chinese PDF (GB/T29043-2023) GB/T 23327-2025 GB/T 20818GB 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