SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue and cost recognition (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Contract Liabilities (Deferred Revenue)	$ 746,936	$ 1,245,300
Deferred revenue	1,245,300
Vendor deposit balance	146,278	104,517
Losses charged to expense	$ 0	0
Invoices
Disaggregation of Revenue [Line Items]
Contract Liabilities (Deferred Revenue)		37,029	$ 0
Minimum
Disaggregation of Revenue [Line Items]
Period of delivery of products from commencement of order acceptance	3 months
Period for remaining balance accrued for and paid when the products are shipped from the third-party warehouse	30 days
Maximum
Disaggregation of Revenue [Line Items]
Period of delivery of products from commencement of order acceptance	6 months
Period for remaining balance accrued for and paid when the products are shipped from the third-party warehouse	60 days
Work generated from our own Mount Vernon facility
Disaggregation of Revenue [Line Items]
Contract Liabilities (Deferred Revenue)	$ 437,552	844,331
Work performed at the third party manufacturer
Disaggregation of Revenue [Line Items]
Contract Liabilities (Deferred Revenue)	309,384	363,940
Billings made upfront
Disaggregation of Revenue [Line Items]
Contract Liabilities (Deferred Revenue)		37,029
Input method of accounting
Disaggregation of Revenue [Line Items]
Contract Liabilities (Deferred Revenue)	368,007	844,331
Contracts in progress
Disaggregation of Revenue [Line Items]
Contract Liabilities (Deferred Revenue)	$ 378,929	$ 363,942