The front is the introduction of Baidu Encyclopedia, and the back is my summary.
Rio Tinto is the second largest mining company in the world and its main business is basically in Australia. The largest mining company is BHP Billiton, which is also an Australian company. These two companies are not only in the iron ore industry, but also in almost all mining industries.
CVRD is the largest producer and exporter of iron ore in the world. Now it is also involved in shipping. It has just ordered 13 400,000-ton bulk carriers from South Korea and China.