CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($)	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Net sales	$ 4,334,268	$ 4,098,823
Cost of sales	3,224,767	3,046,299
Gross profit	1,109,501	1,052,524
Selling, general and administrative	741,413	730,465
Income from operations	368,088	322,059
Other income	19,430	2,740
Interest expense	(76,523)	(95,385)
Total other expense, net	(57,093)	(92,645)
Income before income taxes	310,995	229,414
Income tax expense	90,218	65,029
Net income	220,777	164,385
Other comprehensive loss:
Foreign currency translation adjustments	(179)	(1,911)
Other comprehensive loss, net of tax	(179)	(1,911)
Comprehensive income	$ 220,598	$ 162,474
Net income per share – basic	$ 0.01	$ 0.01
Net income per share – diluted	$ 0.01	$ 0.01
Weighted average number of shares outstanding – basic	29,253,495	28,824,593
Weighted average number of shares outstanding – diluted	30,711,007	29,096,727