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4. PROPERTY, PLANT AND EQUIPMENT, NET (Details Narrative) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Property, Plant and Equipment [Abstract] |  |  |  |  |
Land | $ 19,881,983 |  | $ 19,881,983 |  | $ 20,409,998
Depreciation and amortization expense | 3,632,805 | $ 4,601,338 | 10,530,985 | $ 13,974,456 |
Direct labor and factory overheads incurred during plant shutdown | 2,449,352 | 4,353,824 | 7,535,376 | 13,210,971 |
Cost of administrative expenses | 201,182 | $ 247,514 | 648,456 | $ 763,485 |
Cost of net revenue | $ 982,271 |  | $ 2,347,153 |  |

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