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5. FINANCE LEASE RIGHT-OF-USE ASSETS (Tables) | 6 Months Ended
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Jun. 30, 2019
Leases [Abstract] |
Property, plant and equipment under capital leases |
|  | June 30, 2019 |  | December 31, 2018
At cost: |  |  |  |  |  |  |  |
Buildings |  | $ | 119,701 |  |  | $ | 119,899 |
Plant and machinery |  |  | 2,189,762 |  |  |  | 2,193,375 |
Total |  |  | 2,309,463 |  |  |  | 2,313,274 |
Less: Accumulated depreciation and amortization |  |  | (2,124,588) |  |  |  | (2,062,517 | )
Net book value |  | $ | 184,875 |  |  | $ | 250,757 |

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