Metallurgical Corporation of China (MCC) will build an iron-titanium mine in South Africa as a part of three mining contracts signed between the countries.
The mine, to be located in north-eastern South Africa, will have an annual production of 1.2 million tons of pig iron and 680,000t of titanium dioxide.
MCC will work as the main contractor for building the mine and developing infrastructure.
China's Ministry of Commerce said the deals will encourage domestic companies to invest in South Africa's mining and resources sectors as the two sides strengthen their commercial ties.
China and South Africa recently signed a raft of business deals in mining, finance, nuclear energy and other sectors.