YY/T 1944-2024 Chinese PDF (YY /T1944-2024) GB/T 9008-2024 GB/T 25139-2025_Chinese: Ceramic foam filter

GB/T 25139-2025_Chinese: Ceramic foam filter for foundry (Chinese: 铸造用泡沫陶瓷过滤网)

GB/T 24823-2024_Chinese: LED modules for general lighting - Performance specification (Chinese: 普通照明用LED模块 性能规范)

GB/T 45391-2025_Chinese: Non-destructive testing instruments - Equipment for eddy current examination - Array probe characteristics and verification (Chinese: 无损检测仪器 涡流检测设备 阵列探头性能和检验)

20-2025_Chinese: Methods for chemical analysis of tungsten concentrates - Part 20: Determination of mercury content - Solid sampling and direct mercury analysis method (Chinese: 钨精矿化学分析方法 第20部分：汞含量的测定 固体进样直接测定法)

1-2025_Chinese: Railway applications - Fixed installations - Energy utilization for DC traction power supply - Part 1: Energy storage system (Chinese: 轨道交通 地面装置 直流牵引供电能量利用 第1部分：储存系统)

YY/T 1944-2024 Chinese PDF (YY /T1944-2024) GB/T 9008-2024 GB/T 25139-2025_Chinese: Ceramic foam filterYY T 1944 2024_Chinese: Particular specification for medical X ray high voltage generator (Chinese: X) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: YY T 1944 2024