GB/T 45646-2025 Chinese PDF (GB /T45646-2025) GB 5009.307-2025 GB/T 22322

GB/T 22322

4-2024_Chinese: Chemical analysis methods of mixed rare earth oxide of ion-absorption rare earth ore - Part 4: Determination of iron trioxide content - Inductively coupled plasma atomic emission spectrometry (Chinese: 离子型稀土矿混合稀土氧化物化学分析方法 第4部分：三氧化二铁含量的测定 电感耦合等离子体发射光谱法)

classification and model compilation method for complete sets of equipment for fiber carbonization production (Chinese: 纤维碳化生产成套装备的术语、分类及型号编制方法)

GB 16809-2024_Chinese: Fire resistant windows (Chinese: 防火窗)

1-2025_Chinese: Technical specification of energy absorption device for high voltage direct current(HVDC) power transmission - Part 1: DC controllable and self-recovery energy absorption device (Chinese: 高压直流输电用消能装置技术规范 第1部分：直流可控自恢复消能装置)

GB/T 45646-2025 Chinese PDF (GB /T45646-2025) GB 5009.307-2025 GB/T 22322GB T 45646 2025_Chinese: Greenhouse gases The quantification method and requirement for carbon footprint of products Internal combustion engines (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45646 2025