we already informed that govt. officals are not to required to apply for visa, is it true?

we are Govt. officer of Department of Fisheries under Ministry of fisheries & livestock. we are nominated as a trainees of FAO regional training on aquafeed development & seed production under south south cooperation(SSC) to be held in wuxi, jiangsu, china, during 20may to 19 june 2013. pls. inform us detail.