HNP [HUANENG POWER INTERNATIONAL] 6-K: This Form 6-K consists of: announcement. RESIGNATION OF
[This Form 6-K consists of: announcement. RESIGNATION OF DIRECTOR Due to change of work requirement, Mr. Liu Shuyuan, a Director of Huaneng Power International, Inc. (the “Company”) has, in accordance with the relevant provision of the articles of association of the Company, tendered his resignation report in writing to the board of directors of the Company on 13 December 2011]