INVESTMENTS (Details 8) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Investments
U.S. Treasury bills	$ 5,299,331	$ 0
Short-term bonds	968,983	0
Certificates of deposit	200,000	200,000
Total short-term investments	$ 6,468,314	$ 200,000

Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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