Chinese companies have invested heavily in the establishment of a number of free trade zones and special economic zones, in partnership with relevant African governments across the African continent. Since 2007, political relations between the South African government and the Chinese government have tightened. Eighty-three economic and trade cooperation agreements have been signed between South African and Chinese entrepreneurs. In December 2015, the two countries signed twenty-five agreements, totalling $16.5 billion, at an event held at the China-Africa Cooperation Forum (FOCAC) business Forum in South Africa, attended by about 400 businessmen from both countries.