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REVENUE - net sales from customers (Details) - USD ($)	3 Months Ended
	Jun. 30, 2019		Jun. 30, 2018
Revenues	$ 4,334,268		$ 4,098,823
Customer A [Member] | Sales Revenue, Net [Member]
Revenues	$ 1,255,055		$ 1,593,440
Concentration Risk, Percentage	29.00%		39.00%
Customer B [Member] | Sales Revenue, Net [Member]
Revenues		[1]	$ 1,015,148
Concentration Risk, Percentage		[1]	25.00%
Customer C [Member] | Sales Revenue, Net [Member]
Revenues	$ 1,050,577			[1]
Concentration Risk, Percentage	24.00%			[1]
Customer D [Member] | Sales Revenue, Net [Member]
Revenues	$ 618,019			[1]
Concentration Risk, Percentage	14.00%			[1]
Customer E [Member] | Sales Revenue, Net [Member]
Revenues	$ 549,192			[1]
Concentration Risk, Percentage	13.00%			[1]
[1] Less than 10% of total

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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