Home / Standards / GB/T 45504-2025 GB/T 45504-2025 Active Nanotechnologies—Nanostructured porous alumina as catalyst support for vehicle exhaust emission control—Characteristics and measurement methods 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 Standard Type GBT ICS 19.020 CCS G 13 Status 现行 Issue Date 2025-04-25 Implementation 2025-11-01 Responsible Dept 中国科学院 Drafting Unit N/A