GB/T 17775-2024 Chinese PDF (GB/T17775-2024) GB 30000.1-2024 GB/T 22459

GB/T 22459

English versions: GB/T 45343-2025

3-2025_Chinese: Lightning protection system components(LPSC) - Part 3: Requirements for isolating spark gaps(ISGs) (Chinese: 雷电防护系统部件（LPSC） 第3部分： 隔离放电间隙（ISGs）的要求)

GB/T 45593-2025_Chinese: Fine ceramics - Determination of the abrasion resistance of coatings by micro-scale abrasion test (Chinese: 精细陶瓷 微磨损试验测定涂层的耐磨性)

English versions: GB/T 17105-2024

GB/T 17775-2024 Chinese PDF (GB/T17775-2024) GB 30000.1-2024 GB/T 22459GB T 17775 2024_Chinese: Rating of quality levels of tourist attractions (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 17775 2024