Company:  HUANENG POWER INTERNATION ... (HNP)
Form Type:  6-K
Filing Date:  4/20/2012 
CIK:  0000929058 
Address:  NO 40 XUEYUAN NANLU
HAIDIAN DISTRICT 
City, State, Zip:  BEIJING 100088 PRC C,   
Telephone:  (861) 225-4466 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$49.30   		Change: 
0.55 (1.13%)  
Trade Time: 
May 17   		Market Cap: 
$4.38B
Description of Business
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