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Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment (Details) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
At cost:    
Mineral rights $ 3,037,938 $ 3,025,017
Buildings 35,055,241 34,906,137
Plant and machinery 201,702,769 201,012,254
Motor vehicles 140,159 139,563
Furniture, fixtures and office equipment 2,505,055 2,494,400
Construction in process 68,574,529 44,310,149
Total 311,015,691 285,887,520
Less: Accumulated depreciation and amortization (128,599,846) (123,229,974)
     Impairment 0 0
Net book value $ 182,415,845 $ 162,657,546