Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2019	Mar. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,627,203	$ 1,555,687
Accounts receivable, net of allowance for doubtful accounts of $160,000 for each period	1,007,707	916,844
Inventories	372,674	326,308
Prepaid expenses and other current assets	115,225	28,582
Total current assets	3,122,809	2,827,421
Property and equipment, net of accumulated depreciation of $126,850 and $108,099 at September 30, 2019 and March 31, 2019, respectively	76,710	95,461
Operating lease asset	916,406
Accounts receivable-related party	330,090	330,090
Inventories - long-term portion	85,457	85,457
Intangible assets, net of accumulated amortization of $12,733 and $12,035 at September 30, 2019 and March 31, 2019, respectively	8,201	8,899
Other assets	90,764	90,764
Deferred tax asset	1,097,000	1,107,000
Total other assets	2,604,628	1,717,671
Total assets	5,727,437	4,545,092
Current liabilities:
Finance lease payable	31,196	31,196
Line of credit		169,885
Accounts payable	336,835	275,591
Accrued expenses and other current liabilities	158,881	150,549
Customer deposits	671,528	321,441
Due to stockholder	146,217	139,322
Total current liabilities	1,344,657	1,087,984
Long-term liabilities
Finance lease payable, net of current portion	6,356	22,450
Operating lease liability	916,406
Total long-term liabilities	922,762	22,450
Total liabilities	2,267,419	1,110,434
Stockholders' equity:
Preferred stock, $.01 par value; 5,000,000 shares authorized, no shares issued and outstanding
Common stock, $0.0005 par value; 150,000,000 shares authorized, 67,588,492 shares issued and outstanding	33,794	33,794
Additional paid-in capital	33,294,069	33,294,069
Accumulated deficit	(29,867,845)	(29,893,205)
Total stockholders' equity	3,460,018	3,434,658
Total liabilities and stockholders' equity	$ 5,727,437	$ 4,545,092