GB/T 13929-2024 Chinese PDF (GB/T13929-2024) GB/T 44993-2024 1-2024_Chinese: Variable-frequency drive above 1

1-2024_Chinese: Variable-frequency drive above 1 kV and not exceeding 35 kV - Part 1: Technical conditions (Chinese: 1 kV以上不超过35 kV的通用变频调速设备 第1部分：技术条件)

YY/T 1950-2024_Chinese: Tissue engineering medical device - Silk fibroin (Chinese: 组织工程医疗器械 丝素蛋白)

GB/T 31036-2025_Chinese: Proton exchange membrane fuel cell backup power system - Safety (Chinese: 质子交换膜燃料电池备用电源系统 安全)

GB/T 44929-2024_Chinese: Specifications for the scientific proposal evaluation of space high-energy astronomy (Chinese: 空间高能天文科学观测提案评估规范)

English versions: GB/T 18737

GB/T 13929-2024 Chinese PDF (GB/T13929-2024) GB/T 44993-2024 1-2024_Chinese: Variable-frequency drive above 1GB T 13929 2024_Chinese: Water ring vacuum pumps and compressors Testing method (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 13929 2024