10th Congress in 2016 : Mr Somsavat Lengsavad , Mr Choummaly Sayasone , Mr Asang Laoly and Mr Thongsing Thammavong . 10th Congress in 2016 : Mr Choummaly Sayasone , Mr Thongsing Thammavong , Mr Asang Laoly and Mr Somsavat Lengsavad