GB/T 2900.17-2024 Chinese PDF (GB/T2900.17-2024) GB/T 44970-2024 GB/T 45504-2025_Chinese: Nanotechnologies - Nanostructured

GB/T 45504-2025_Chinese: Nanotechnologies - Nanostructured porous alumina as catalyst support for vehicle exhaust emission control - Characteristics and measurement methods (Chinese: 纳米技术 汽车尾气排放控制用纳米结构多孔氧化铝催化剂载体 特性和测量方法)

GB/T 23020-2023_Chinese: Assessment specification on integration of informatization and industrialization for industrial enterprises (Chinese: 工业企业信息化和工业化融合评估规范)

marking and packing for printed and dyed fabric of cotton

English versions: GB 45672-2025

GB/T 45308-2025_Chinese: Railway applications - Rolling stock - Technical requirements for network time synchronization (Chinese: 轨道交通 机车车辆 网络时间同步技术要求)

GB/T 2900.17-2024 Chinese PDF (GB/T2900.17-2024) GB/T 44970-2024 GB/T 45504-2025_Chinese: Nanotechnologies - NanostructuredGB T 2900. 17 2024_Chinese: Electrotechnical terminology Measuring relays and protection equipment (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 2900. 17 2024