GB/T 9869.1-2025 Chinese PDF (GB /T9869.1-2025) GB/T 45525.1-2025 TN and IT systems (Chinese:

TN and IT systems (Chinese: 交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第11部分：TT、TN和IT系统中剩余电流监视器（RCM）的有效性)

GB/T 44934-2024_Chinese: Technical specification for flywheel energy storage unit of electrical energy storage (Chinese: 电力储能用飞轮储能单元技术规范)

English versions: GB/T 45338-2025

English versions: GB/T 45179-2024

English versions: GB/T 25025-2025

GB/T 9869.1-2025 Chinese PDF (GB /T9869.1-2025) GB/T 45525.1-2025 TN and IT systems (Chinese:GB T 9869. 1 2025_Chinese: Rubber Measurement of vulcanization characteristics using curemeters Part 1: Introduction (Chinese: 1: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 9869. 1 2025