Chinese Minister of Commerce Gao Hucheng (R) and WTO chief Roberto Azevedo attend the press briefing in Bali, Indonesia, Dec. 3, 2013. China will expand its cooperation program with the group of four major African cotton-producing countries, or the C4, trade officials from the two sides announced at the sidelines of the ongoing 9th Ministerial Conference of the World Trade Organization (WTO) here Tuesday. (Xinhua/Jiang Fan)
