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BRIEF-Huaneng Power International's General Manager Liu Guoyue Resigns Due To Change In Job Role

May 15 (Reuters) - Huaneng Power International Inc :

* SAYS GENERAL MANAGER LIU GUOYUE RESIGNS DUE TO CHANGE IN JOB ROLE Source text in Chinese: https://bit.ly/2rEW6Au Further company coverage: (Reporting by Hong Kong newsroom)