4. INVENTORIES (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Materials	$ 2,043,843	$ 1,524,728
Work in process	121,624	1,149
Finished goods	5,762,211	3,676,426
Total inventories	$ 7,927,678	$ 5,202,303

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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.

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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.

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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.

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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.

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