GB/T 20718.2-2025 English PDF (GB/T20718.2-2025) GB/T 15561-2024 3-2025_Chinese: Petroleum and natural gas

3-2025_Chinese: Petroleum and natural gas industries - Materials for use in H2S-containing environments in oil and gas production - Part 3: Cracking-resistant CRAs(corrosion-resistant alloys) and other alloys (Chinese: 石油天然气工业 油气开采中用于含硫化氢环境的材料 第3部分：抗开裂耐蚀合金和其他合金)

GB 38031-2025_Chinese: Electric vehicles traction battery safety requirements (Chinese: 电动汽车用动力蓄电池安全要求)

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)

English versions: GB/T 19598-2025

GB/T 20718.2-2025 English PDF (GB/T20718.2-2025) GB/T 15561-2024 3-2025_Chinese: Petroleum and natural gasGB T 20718. 2 2025_Chinese: Road vehicles Connectors for the electrical connection of towing and towed vehicles (13 pole) Part 2: 13 pole connectors for vehicles with 12 V nominal supply voltage intended to cross water fords (Chinese: 13 2 12V13 ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20718. 2 2025