Group 1 - The Ximandu iron ore project has officially commenced production, marking a significant milestone in the development of mineral resources in Africa [1] - The railway connecting the Maribaya Port to the Ximandu mining area is approximately 600 kilometers long and is the longest modern railway built in Guinea since the 1970s [1] - The project involves a total investment of over 20 billion USD and includes comprehensive systems such as mining, railways, and ports [1] Group 2 - China has led the formulation of 1,079 international standards since the beginning of the 14th Five-Year Plan, enhancing the global influence of Chinese standards [2] - The promotion of over 500 standards for mutual recognition between China and other countries reflects the growing international cooperation and soft power of China [2]