GB/T 12385-2025 Chinese PDF (GB /T12385-2025) GB/T 15604-2024 GB/T 20243

GB/T 20243

36-2024_Chinese: Electromagnetic compatibility - Testing and measurement techniques - Part 36: Intentional electromagnetic interference immunity test methods for equipment and systems (Chinese: 电磁兼容 试验和测量技术 第36部分：设备和系统的有意电磁干扰抗扰度试验方法)

7-2024_Chinese: Proton exchange membrane fuel cells - Part 7: Test method of carbon paper properties (Chinese: 质子交换膜燃料电池 第7部分：炭纸特性测试方法)

English versions: GB 20943-2025

GB/T 12385-2025 Chinese PDF (GB /T12385-2025) GB/T 15604-2024 GB/T 20243GB T 12385 2025_Chinese: Standard test methods for sealability of gaskets for pipe flanges (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 12385 2025