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REVENUE - Net sales from customers (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
REVENUE
Revenues	$ 7,970,086	$ 8,522,647	$ 15,341,326	$ 15,599,004
Customer A | Customer concentration risk | Sales revenue, net
REVENUE
Revenues	$ 2,560,204	$ 1,438,049	$ 4,845,478	$ 2,734,436
Concentration risk percentage	32.00%	17.00%	32.00%	18.00%
Customer B | Customer concentration risk | Sales revenue, net
REVENUE
Revenues	$ 999,540		$ 1,742,776
Concentration risk percentage	13.00%		11.00%
Customer C | Customer concentration risk | Sales revenue, net
REVENUE
Revenues		$ 1,614,929		$ 3,378,520
Concentration risk percentage		19.00%		22.00%
Customer D | Customer concentration risk | Sales revenue, net
REVENUE
Revenues		$ 1,971,441		$ 3,043,315
Concentration risk percentage		23.00%		20.00%

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