GB/T 21121-2024 Chinese PDF (GB /T21121-2024) GB/T 12412-2024 1-2025_Chinese: Cards and security devices

1-2025_Chinese: Cards and security devices for personal identification - Test methods - Part 1: General characteristics (Chinese: 卡及身份识别安全设备 测试方法 第1部分：一般特性)

English versions: GB/T 19598-2025

3-2025_Chinese: Household electric direct-acting room heaters - Methods for measuring performance - Part 3: Additional provisions for the measurement of the radiation efficiency (Chinese: 家用直接作用式房间电加热器 性能测试方法 第3部分：辐射效率测量的附加规定)

English versions: GB/T 19396-2025

4-2024_Chinese: Devices and integration in enterprise systems - Function blocks(FB) for process control and electronic device description language(EDDL) - Part 4: EDD interpretation (Chinese: 企业系统中的设备和集成 过程控制用功能块（FB）和电子设备描述语言（EDDL） 第4部分：EDD互操作)

GB/T 21121-2024 Chinese PDF (GB /T21121-2024) GB/T 12412-2024 1-2025_Chinese: Cards and security devicesGB T 21121 2024_Chinese: Animal and vegetable fats and oils Determination of oxidative stability(accelerated oxidation test) (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21121 2024