ACCOUNTS RECEIVABLE (Details) - Schedule of accounts receivable - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Schedule of accounts receivable [Abstract]
Accounts receivable from customers	$ 2,184,799	$ 2,724,137
Allowance for doubtful accounts	(340,467)	(343,832)
Accounts receivable, net	$ 1,844,332	$ 2,380,305