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1. BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) | 3 Months Ended
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Mar. 31, 2021
Building (Including Salt Pans) | Minimum |
Property, plant and equipment, useful life | 8 years
Building (Including Salt Pans) | Maximum |
Property, plant and equipment, useful life | 20 years
Plant and Machinery (Including Protective Shells, Transmission Channels and Ducts) | Minimum |
Property, plant and equipment, useful life | 3 years
Plant and Machinery (Including Protective Shells, Transmission Channels and Ducts) | Maximum |
Property, plant and equipment, useful life | 8 years
Motor Vehicles |
Property, plant and equipment, useful life | 5 years
Furniture, Fixtures and Equipment | Minimum |
Property, plant and equipment, useful life | 3 years
Furniture, Fixtures and Equipment | Maximum |
Property, plant and equipment, useful life | 8 years

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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