11. REVENUES (Details) - USD ($)	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Revenues	$ 1,372,392	$ 1,317,052
Discounts and allowances	(6,848)	(3,515)
Product Sales [Member]
Revenues	1,265,427	1,255,852
Maintenance Fees [Member]
Revenues	11,243	3,679
Professional Services [member]
Revenues	3,750	14,525
Shipping and Handling [Member]
Revenues	$ 98,820	$ 46,511

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details