INVENTORIES (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
INVENTORIES
Raw materials	$ 36,847,228	$ 13,515,011
Work-in-progress	283,080	508,117
Finished goods	1,205,900	1,196,975
Less: reserve for inventories.	(126,911)	(119,775)
Inventories, net	$ 38,209,297	$ 15,100,328

Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

+ References

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-Publisher FASB
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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

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-Publisher FASB
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-Section 45
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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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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.

+ References

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-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a)(3))
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