Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net loss	$ (30,672)	$ (115,736)
Adjustments to reconcile net (loss) to net cash (used in) operating activities:
Depreciation and amortization	29,012	26,705
Write-off of inventories	18,375	14,593
Deferred taxes	(19,000)	(42,000)
Non-cash interest expense	7,905	8,758
Changes in operating assets and liabilities balances:
Accounts receivable	(37,777)	22,958
Inventories	(73,576)	(94,056)
Prepaid expenses and other current assets	(19,486)	(25,655)
Accounts payable	(58,256)	(84,417)
Customer deposits	(25,432)	96,285
Accrued expenses and other current liabilities	(33,526)	(27,876)
Payments of operating lease liability	(25,469)	(25,468)
Net cash (used in) operating activities	(267,902)	(245,909)
Cash flows provided (used) in financing activities:
Due to stockholder	4,053	(15,287)
Proceeds from line of credit	22,000	25,000
Proceeds from PPP loan	0	381,000
Repayments on capital lease payable	0	(8,046)
Net cash provided by financing activities	26,053	382,667
Net (decrease) increase in cash and cash equivalents	(241,849)	136,758
Cash and cash equivalents - beginning of period	1,546,950	1,438,714
Cash and cash equivalents - end of period	1,305,101	1,575,472
Cash paid for:
Interest	$ 2,239	$ 1,275