According to Reuters, after more than six months of arduous negotiations, the Guinea-Winning Alliance, which consists of Singapore’s Wei Li International Group, China’s Shandong Weiqiao, Shandong Yantai Port Group, and Guinea UMS, signed a railway and alumina with the Guinean government on Monday. The three major conventions for mining will be the first alumina plant to be put into operation in the country for nearly half a century. It will also be the largest alumina plant in China. The alumina plant project, with an annual capacity of 1 million tons, is part of a $3 billion investment complex to win the Alliance's development of Guinea Bauxite, which currently operates the largest bauxite project in Africa. According to the data, the West African country of Guinea has one-third of the world's bauxite reserves, and the aluminum giants win the alliance, Alcoa, Rio Tinto Alcan and private investment group Dadco. Under the investment, aluminum ore production more than doubled last year, reaching about 50 million tons. According to SMM data, China imported a total of 71.05 million tons of bauxite from January to October 2018, up 28.3% year-on-year, of which the imported bauxite from Guinea was 31.536 million tons, accounting for 44.1%. From January to October 2018, China exported a total of 990,000 tons of alumina, importing 455,000 tons, and net exports of 544,000 tons in the first 10 months. However, before this year, China has been in a state of net importer of alumina, and the countries of import are concentrated in Australia. Vietnam, India, Indonesia and other countries.