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v3.23.1

FINANCE LEASE RIGHT-OF-USE ASSETS (Details Narrative) - USD ($) | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Finance Lease Right-of-use Assets |  |
Depreciation and amortization expense | $ 1,353 | $ 1,459

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- Definition Depreciation and amortization expense. + References No definition available. + Details
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Namespace Prefix: | gure_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | gure_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration