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Taxes Payable (Tables) | 6 Months Ended
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Jun. 30, 2012
Taxes Payable | Taxes consisted of the following as of June 30, 2012 and December 31, 2011:
|  | 2012 |  |  | 2011 |
Income |  | $ | (121,779 | ) |  | $ | 2,205,337 |
Business |  |  | 275,046 |  |  |  | 305,141 |
VAT arising from transfer WGPG to Shenmu |  |  | 379,453 |  |  |  | 380,898 |
Other |  |  | 36,933 |  |  |  | 51,658 |
|  | $ | 569,653 |  |  | $ | 2,943,034 |

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- Definition Taxes Payable [Table Text Block] + References No definition available. + Details
Name: | creg_TaxesPayableTableTextBlock
Namespace Prefix: | creg_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration