4. INVENTORIES (Details) - USD ($) |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Raw materials | $ 33,381,806 | $ 14,019,668 |
| Work-in-process | 14,455,665 | 0 |
| Finished goods | 5,227,263 | 4,596,501 |
| Total inventories | $ 53,064,734 | $ 18,616,169 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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