GB/T 15688-2024 Chinese PDF (GB/T15688-2024) GB/T 17469-2024 English versions: GB/T 45539-2025

English versions: GB/T 45539-2025

English versions: GB/T 13930-2024

English versions: GB/T 22068-2025

GB/T 45462-2025_Chinese: Test methods for the performance of gas-phase air cleaning media and devices (Chinese: 气相空气净化材料及装置性能试验方法)

12-2024_Chinese: Low-voltage surge protective device (SPD) - Part 12: Surge protective devices connected to low-voltage power systems - Selection and application principles (Chinese: 低压电涌保护器（SPD） 第12部分：低压电源系统的电涌保护器 选择和使用导则)

GB/T 15688-2024 Chinese PDF (GB/T15688-2024) GB/T 17469-2024 English versions: GB/T 45539-2025GB T 15688 2024_Chinese: Animal and vegetable fats and oils Determination of insoluble impurities content (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 15688 2024