GB/T 2900.17-2024 Chinese PDF (GB/T2900.17-2024) GB/T 44970-2024 English versions: GB/T 19212

English versions: GB/T 19212

English versions: GB/T 13629-2023

7-2025_Chinese: Plastics - Polyether polyols for use in the production of polyurethane - Part 7: Determination of basicity (Chinese: 塑料 聚氨酯生产用聚醚多元醇 第7部分：碱性物质含量的测定)

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)

marking and packing for printed and dyed fabric of cotton

GB/T 2900.17-2024 Chinese PDF (GB/T2900.17-2024) GB/T 44970-2024 English versions: GB/T 19212GB 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