GB/T 25020.1-2025 Chinese PDF (GB /T25020.1-2025) GB 32047-2025 English versions: GB/T 29912-2024

English versions: GB/T 29912-2024

English versions: GB 20072-2024

GB/T 14478-2025_Chinese: Basic technical specification of inlet valves for large and medium-sized hydraulic turbines (Chinese: 大中型水轮机进水阀门基本技术规范)

GB/T 19396-2025_Chinese: Terbium-dysprosium-iron magnetostrictive materials (Chinese: 铽镝铁磁致伸缩材料)

GB/T 25020.1-2025 Chinese PDF (GB /T25020.1-2025) GB 32047-2025 English versions: GB/T 29912-2024GB T 25020. 1 2025_Chinese: Pole for overhead contact system of electrified railways Part 1: Steel pole (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 25020. 1 2025