GB/T 17821-2025 Chinese PDF (GB /T17821-2025) GB 39800.8-2024 5-2024_Chinese: Proton exchange membrane fuel

5-2024_Chinese: Proton exchange membrane fuel cell - Part 5: Test method for membrane electrode assembly (Chinese: 质子交换膜燃料电池 第5部分：膜电极测试方法)

33-2024_Chinese: Specifications for optical fibre test methods - Part 33: Measurement methods and test procedures for mechanical characteristics - Stress corrosion susceptibility (Chinese: 光纤试验方法规范 第33部分：机械性能的测量方法和试验程序 应力腐蚀敏感性参数)

English versions: GB/T 1232

“dry” and “wet” conditions (Chinese: 金属和合金的腐蚀 循环暴露在盐雾、“干”和“湿”条件下的加速试验)

GB/T 10361-2024_Chinese: Wheat

GB/T 17821-2025 Chinese PDF (GB /T17821-2025) GB 39800.8-2024 5-2024_Chinese: Proton exchange membrane fuelGB T 17821 2025_Chinese: Rubber latex Determination of density between 5 and 40 (Chinese: 540) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 17821 2025