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

At Cost

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The amount of property, plant and equipment impairment cost.

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Amount before accumulated depreciation, depletion and amortization of motor vehicles used in the normal conduct of business to produce goods and services and not intended for resale.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Carrying amount at the balance sheet date of mineral properties, gross of adjustments.

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