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15. MAJOR SUPPLIERS (Details Narrative) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Major Suppliers Details Narrative |  |
Top five suppliers percentage raw materials supplied | 0.00% | 69.70%
Amount due top five suppliers | $ 0 | $ 5,639,164

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Namespace Prefix: | gure_
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Period Type: | duration