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5. FINANCE LEASE RIGHT-OF-USE ASSETS (Tables)
 3 Months Ended
Mar. 31, 2020
Leases [Abstract]  
Property, plant and equipment under capital leases
    March 31,
2020		   December 31,
2019
At cost:                
Buildings   $ 116,146     $ 117,956  
Plant and machinery     2,124,729       2,157,848  
Total     2,240,875       2,275,804  
Less: Accumulated depreciation and amortization     (2,065,412 )     (2,096,278 )
Net book value   $ 175,463     $ 179,526