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Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Property, Plant and Equipment Useful Life (Details)
6 Months Ended
Jun. 30, 2021
Buildings (including salt pans) | Minimum  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 8 years
Buildings (including salt pans) | Maximum  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 20 years
Plant and Machinery (including protective shells, transmission channels and ducts) | Minimum  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 3 years
Plant and Machinery (including protective shells, transmission channels and ducts) | Maximum  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 8 years
Motor Vehicles  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 5 years
Furniture, Fixtures and Equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 3 years
Furniture, Fixtures and Equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 8 years