CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net sales	$ 3,621,185	$ 4,588,894	$ 7,720,008	$ 10,419,280
Cost of sales	2,526,085	3,155,893	5,572,384	7,245,692
Gross profit	1,095,100	1,433,001	2,147,624	3,173,588
Selling, general and administrative	751,037	720,341	1,481,502	1,640,100
Income from operations	344,063	712,660	666,122	1,533,488
Other income	4,275	1,456	7,015	1,547
Interest expense	(90,249)	(100,414)	(185,634)	(209,196)
Total other expense, net	(85,974)	(98,958)	(178,619)	(207,649)
Income before income taxes	258,089	613,702	487,503	1,325,839
Income tax expense	77,374	245,516	142,403	533,151
Net income	180,715	368,186	345,100	792,688
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	(509)	1,854	(2,420)	2,586
Other comprehensive income (loss), before tax	(509)	1,854	(2,420)	2,586
Income tax expense on other comprehensive income	0	746	0	1,042
Other comprehensive income (loss), net of tax	(509)	1,108	(2,420)	1,544
Comprehensive income	$ 180,206	$ 369,294	$ 342,680	$ 794,232
Net income per share basic	$ 0.01	$ 0.01	$ 0.01	$ 0.03
Net income per share diluted	$ 0.01	$ 0.01	$ 0.01	$ 0.03
Weighted average number of shares outstanding: Basic	28,824,593	28,824,593	28,824,593	28,824,593
Weighted average number of shares outstanding: Diluted	30,150,485	29,730,456	30,054,055	29,751,219