Quarterly report pursuant to Section 13 or 15(d)

ACCRUED LIABILITIES - Schedule of Accrued Liabilities (Details)

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ACCRUED LIABILITIES - Schedule of Accrued Liabilities (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
Other Liabilities Disclosure [Abstract]      
Employee-related payables $ 657,501   $ 1,657,826
Inventory-related payables 208,128 $ 0  
Warranty liabilities 115,731   166,301
Acquisition liabilities 20,225   162,907
Other 120,657   102,357
Total $ 1,122,242 $ 2,089,391 $ 2,089,391