GB/T 2684-2025 Chinese PDF (GB /T2684-2025) GB/T 18916.65-2024 GB/T 20972

GB/T 20972

English versions: GB/T 13522-2024

GB/T 30425-2025_Chinese: Water cooling equipment for converter valves for high voltage direct current(HVDC) ower transmission (Chinese: 高压直流输电换流阀水冷却设备)

2-2025_Chinese: Agricultural tractors - General requirement - Part 2: 50 kW～130 kW wheeled tractors (Chinese: 农业拖拉机 通用技术条件 第2部分：50 kW～130 kW轮式拖拉机)

GB/T 29292-2024_Chinese: Footwear - Guidelines for the management and control of key chemicals in footwear and footwear components (Chinese: 鞋类 鞋类和鞋类部件中重点化学物质管控指南)

GB/T 2684-2025 Chinese PDF (GB /T2684-2025) GB/T 18916.65-2024 GB/T 20972GB T 2684 2025_Chinese: Test methods for foundry sands and molding mixtures (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 2684 2025