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SUBSEQUENT EVENTS (Details) - USD ($)
1 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Mar. 31, 2019
Sky Development Renewable Energy Resources S.A.      
SUBSEQUENT EVENTS      
Proportion of ownership interest in subsidiary 100.00% 100.00%  
Mr. Su Weili      
SUBSEQUENT EVENTS      
Amount due to related parties     $ 14,900,000
Mr. Su Weili | Stock purchase agreement      
SUBSEQUENT EVENTS      
Amount due to related parties     $ 14.9