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5. FINANCE LEASE RIGHT-OF-USE ASSETS (Details) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
At cost $ 2,240,875 $ 2,275,804
Less: accumulated depreciation and amortization (2,065,412) (2,096,278)
Net book value 175,463 179,526
Building    
At cost 116,146 117,956
Plant and machinery    
At cost $ 2,124,729 $ 2,157,848