REVENUE - Net Sales from Customers (Details) - USD ($)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues	$ 15,595,558	$ 16,007,288
Customer A | Sales Revenue, Net
Revenues	$ 2,704,985	$ 3,558,477
Concentration risk percentage	17.00%	22.00%
Customer B | Sales Revenue, Net
Revenues	$ 2,682,881
Concentration risk percentage	17.00%
Customer C | Sales Revenue, Net
Revenues	$ 2,308,564	$ 2,758,957
Concentration risk percentage	15.00%	17.00%
Customer D | Sales Revenue, Net
Revenues	$ 2,145,465	$ 2,063,409
Concentration risk percentage	14.00%	13.00%
Customer E | Sales Revenue, Net
Revenues		$ 1,835,362
Concentration risk percentage		11.00%