CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (unaudited)
Net sales	$ 4,713,933	$ 3,074,076	$ 7,996,458	$ 7,408,344
Cost of sales	3,585,073	2,660,558	6,170,584	5,885,325
Gross profit	1,128,860	413,518	1,825,874	1,523,019
Selling, general and administrative	696,016	740,967	1,489,378	1,482,380
Income (loss) from operations	432,844	(327,449)	336,496	40,639
Other income	804	1,448	1,456	20,878
Interest expense	(51,582)	(72,596)	(109,480)	(149,119)
Total other expense, net	(50,778)	(71,148)	(108,024)	(128,241)
Income (loss) before income taxes	382,066	(398,597)	228,472	(87,602)
Income tax expense (benefit)	111,302	(107,576)	73,942	(17,358)
Net income (loss)	270,764	(291,021)	154,530	(70,244)
Other comprehensive loss, before tax:
Foreign currency translation adjustments	(1,005)	(159)	(1,102)	(338)
Other comprehensive loss, net of tax	(1,005)	(159)	(1,102)	(338)
Comprehensive income (loss)	$ 269,759	$ (291,180)	$ 153,428	$ (70,582)
Net income (loss) per share basic	$ 0.01	$ (0.01)	$ 0.01	$ 0.00
Net income (loss) per share diluted	$ 0.01	$ (0.01)	$ 0.01	$ 0.00
Weighted average number of shares outstanding:
Basic	29,431,629	29,254,594	29,395,791	29,254,048
Diluted	30,987,233	29,254,594	31,002,130	29,254,048