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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) | Total | Common Stock [Member] | Paid-in Capital [Member] | Shares To Be Issued [Member] | Statutory Reserves [Member] | Other Comprehensive Income [Member] | Accumulated Retained Earnings [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2012 | $ 114,979,201 us-gaap_StockholdersEquity | $ 50,224 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 58,501,643 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 0 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | $ 7,766,002 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | $ 11,554,225 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 37,107,107 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ 4,376,436 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance (in shares) at Dec. 31, 2012 |  | 50,224,350 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |
Shares issued for system purchase | 16,481,108 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets | 8,767 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 16,472,341 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 0 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Shares issued for system purchase (in shares) |  | 8,766,547 us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |
Capital contribution from noncontrolling interest | 0 us-gaap_MinorityInterestPeriodIncreaseDecrease | 0 us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0 us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 403,618 us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Exercise of stock options | 1,893 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 1,893 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Exercise of stock options (in shares) |  | 1,892,672 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |
Exercise of warrants | 26 creg_StockIssuedDuringPeriodValueStockWarrantsExercised | 26 creg_StockIssuedDuringPeriodValueStockWarrantsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 creg_StockIssuedDuringPeriodValueStockWarrantsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 creg_StockIssuedDuringPeriodValueStockWarrantsExercised / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 creg_StockIssuedDuringPeriodValueStockWarrantsExercised / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 creg_StockIssuedDuringPeriodValueStockWarrantsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0 creg_StockIssuedDuringPeriodValueStockWarrantsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 0 creg_StockIssuedDuringPeriodValueStockWarrantsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Exercise of warrants (in shares) |  | 26,489 creg_StockIssuedDuringPeriodSharesStockWarrantsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |
Net income for year | 15,629,536 us-gaap_NetIncomeLoss | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 15,629,536 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 186,270 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Transfer to statutory reserves | 0 creg_TransferToStatutoryReserve | 0 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 1,906,752 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (1,906,752)creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 0 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Purchase of noncontrolling interest of Erdos TCH | 2,929,469 creg_PurchaseOfNoncontrollingInterestOfErdosTch | 0 creg_PurchaseOfNoncontrollingInterestOfErdosTch / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 3,156,069 creg_PurchaseOfNoncontrollingInterestOfErdosTch / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 creg_PurchaseOfNoncontrollingInterestOfErdosTch / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 creg_PurchaseOfNoncontrollingInterestOfErdosTch / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 creg_PurchaseOfNoncontrollingInterestOfErdosTch / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (226,600)creg_PurchaseOfNoncontrollingInterestOfErdosTch / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (4,624,799)creg_PurchaseOfNoncontrollingInterestOfErdosTch / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Foreign currency translation gain | 4,655,178 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 4,655,178 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 3,592 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance at Dec. 31, 2013 | 154,676,411 us-gaap_StockholdersEquity | 60,910 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 78,130,053 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 9,672,754 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 16,209,403 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 50,603,291 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 345,117 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance (in shares) at Dec. 31, 2013 |  | 60,910,058 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |
Shares issued for system purchase | 14,491,451 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets | 8,234 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 14,483,217 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 0 us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Shares issued for system purchase (in shares) |  | 8,233,779 us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |
Exercise of stock options | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 36 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (36)us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 0 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Exercise of stock options (in shares) |  | 36,124 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |
Shares purchased by officer | 18,918,173 creg_StockIssuedDuringPeriodValueForOfficers | 13,829 creg_StockIssuedDuringPeriodValueForOfficers / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 18,904,344 creg_StockIssuedDuringPeriodValueForOfficers / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 creg_StockIssuedDuringPeriodValueForOfficers / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 creg_StockIssuedDuringPeriodValueForOfficers / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 creg_StockIssuedDuringPeriodValueForOfficers / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0 creg_StockIssuedDuringPeriodValueForOfficers / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 0 creg_StockIssuedDuringPeriodValueForOfficers / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Shares purchased by officer (in shares) |  | 13,829,074 creg_StockIssuedDuringPeriodSharesForOfficers / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |
Shares to be issued for IR service | 187,500 us-gaap_StockIssuedDuringPeriodValueIssuedForServices | 0 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 187,500 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 0 us-gaap_StockIssuedDuringPeriodValueIssuedForServices / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Net income for year | 19,811,922 us-gaap_NetIncomeLoss | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 19,811,922 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (86,730)us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Transfer to statutory reserves | 0 creg_TransferToStatutoryReserve | 0 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 2,215,416 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | 0 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (2,215,416)creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 0 creg_TransferToStatutoryReserve / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Foreign currency translation gain | (222,265)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | (222,265)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (1,588)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance at Dec. 31, 2014 | $ 207,863,192 us-gaap_StockholdersEquity | $ 83,009 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 111,517,578 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 187,500 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = creg_SharesToBeIssuedMember | $ 11,888,170 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = creg_StatutoryReservesMember | $ 15,987,138 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 68,199,797 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ 256,799 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Balance (in shares) at Dec. 31, 2014 |  | 83,009,035 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |  |

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