GB/T 39077-2024 Chinese PDF (GB/T39077-2024) GB/T 3653.1-2024 GB/T 28634-2025_Chinese: Microbeam analysis -

GB/T 28634-2025_Chinese: Microbeam analysis - Electron probe microanalysis - Quantitative point analysis for bulk specimens using wavelength dispersive X-ray spectroscopy (Chinese: 微束分析 电子探针显微分析 块状试样波谱法定量点分析)

GB/T 14601-2025_Chinese: Electronic specialty gas - Ammonia (Chinese: 电子特气 氨)

GB/T 45404-2025_Chinese: Data security technology - Requirements for large Internet companies internal personal information protection supervision agency (Chinese: 数据安全技术 大型互联网企业内设个人信息保护监督机构要求)

4-2024_Chinese: Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks - Part 4: Lining with cured-in-place pipes (Chinese: 地下无压排水管网非开挖修复用塑料管道系统 第 4 部分：原位固化内衬法)

English versions: GB/T 30685-2024

GB/T 39077-2024 Chinese PDF (GB/T39077-2024) GB/T 3653.1-2024 GB/T 28634-2025_Chinese: Microbeam analysis -GB T 39077 2024_Chinese: Test methods for detecting detrimental phase in austenitic ferritic(duplex) stainless steels (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 39077 2024