GB/T 12690.20-2024 Chinese PDF (GB /T12690.20-2024) GB/T 1406.3-2025 GB/T 15316-2024_Chinese: General principles for

GB/T 15316-2024_Chinese: General principles for energy saving monitoring and testing techniques (Chinese: 节能监测技术通则)

GB 23394-2024_Chinese: Respiratory protection - Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus (Chinese: 呼吸防护 正压式自给闭路压缩氧气呼吸器)

GB 25596-2025_Chinese: National food safety standard - General Rules for Infant Formula Food for Special Medical Purposes (Chinese: 食品安全国家标准 特殊医学用途婴儿配方食品通则)

English versions: GB/T 17670-2025

GB/T 17925-2024_Chinese: Practice for X-ray digital radioscopic examination of cylinder weld (Chinese: 气瓶对接焊缝X射线数字成像检测)

GB/T 12690.20-2024 Chinese PDF (GB /T12690.20-2024) GB/T 1406.3-2025 GB/T 15316-2024_Chinese: General principles forGB T 12690. 20 2024_Chinese: Chemical analysis methods for non rare earth impurities of rare earth metals and their oxides Part 20: Determination of minor amounts of fluorine and chlorine in rare earth oxides Ion chromatography method (Chinese: 20 ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 12690. 20 2024