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5. FINANCE LEASE RIGHT-OF-USE ASSETS (Tables) | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Property, plant and equipment under finance leases |
|  | December 31, 2020 |  | December 31, 2019
At cost: |  |  |  |  |  |  |  |
Buildings |  | $ | 126,120 |  |  | $ | 117,956 |
Plant and machinery |  |  | 2,307,184 |  |  |  | 2,157,848 |
Total |  |  | 2,433,304 |  |  |  | 2,275,804 |
Less: Accumulated depreciation and amortization |  |  | (2,247,032 | ) |  |  | (2,096,278 | )
Net book value |  | $ | 186,272 |  |  | $ | 179,526 |

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