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v3.22.2.2

Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment (Details) - USD ($) | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
At cost: |  |
Mineral rights | $ 2,873,621 | $ 3,025,017
Buildings | 33,333,765 | 34,906,137
Plant and machinery | 236,409,033 | 201,012,254
Motor vehicles | 132,578 | 139,563
Furniture, fixtures and office equipment | 2,369,561 | 2,494,400
Construction in process | 25,391,292 | 44,310,149
Total | 300,509,850 | 285,887,520
Less: Accumulated depreciation and amortization | (126,947,258) | (123,229,974)
Impairment | 0 | 0
Net book value | $ 173,562,592 | $ 162,657,546

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