INCOME TAXES - Actual Provision for Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
INCOME TAXES
(Loss) income before income tax expense	$ (1,908,788)	$ 81,447	$ (9,700,614)	$ (791,828)
Computed tax benefit with statutory tax rate	(400,844)	13,440	(2,037,129)	(130,651)
Impact of different tax rates in other jurisdictions	766	16,109	1,864	14,432
Impact of preferred tax rate	(158,079)	7,729	(152,689)	62,248
U.S. tax on foreign entities	213,238		213,238
Tax effect of non-deductible expenses	31,084	153,619	95,459	337,519
Changes in valuation allowance	524,905	(204,420)	2,098,066	(338,577)
Others	(127,178)	12,892	(128,324)	149,254
Total income tax (benefit) expense	$ 83,892	$ (631)	$ 90,485	$ 94,225