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15. MAJOR SUPPLIERS (Details Narrative) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Major Suppliers Details Narrative |  |
Top five suppliers percentage raw materials supplied | 89.40%gure_TopFiveSuppliersPercentageRawMaterialsSupplied | 87.60%gure_TopFiveSuppliersPercentageRawMaterialsSupplied
Amount due top five suppliers | $ 2,794,998 gure_AmountDueTopFiveSuppliers | $ 3,550,572 gure_AmountDueTopFiveSuppliers

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- Definition Custom Element. + References No definition available. + Details
Name: | gure_AmountDueTopFiveSuppliers
Namespace Prefix: | gure_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | gure_MajorSuppliersDetailsNarrativeAbstract
Namespace Prefix: | gure_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | gure_TopFiveSuppliersPercentageRawMaterialsSupplied
Namespace Prefix: | gure_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration