April 16 (Reuters) - HNA Investment Group Co Ltd :
* SAYS PRESIDENT DAI MEIOU RESIGNS DUE TO CHANGE IN JOB ROLE
* SAYS VICE PRESIDENT MENG YONGTAO, DU JING RESIGN DUE TO PERSONAL REASONS
* SAYS BOARD APPOINTS LIN HAN, MU WENJIN AS PRESIDENTS Source text in Chinese: bit.ly/2H61zL9 Further company coverage: (Reporting by Hong Kong newsroom)