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GRANT INCOME (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
GRANT INCOME        
Grant received recorded as revenue $ 466,785 $ 0 $ 466,785 $ 0
Grant income as revenue     us-gaap:GrantMember