His royal highness, prince Salman Bin Abdulaziz Al Saud, governer of Riyadh region, is to sponsor Riyadh Chamber celebration for marking the 50th anniversary of its founding, the evening of Tuesday 20/5/1431 H corresponding to 4/5/2010 Gregorian, at Riyadh International Exhibition Center. This celebration will include the official launch of Riyadh International Exhibition Center, which is considered one of the latest projects for Riyadh Chamber of Commerce. The celebration also includes honoring the members of the board of directors in its first year, as the first board of directors in 1381H, in addition to honoring a number of previous ministers of commerce and industry, and chairmen of board of directors throughout its 15 sessions.