Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income (loss)	$ (115,736)	$ 52,769
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	9,995	9,725
Write-off of inventories	14,593	15,639
Deferred taxes	(42,000)	21,000
Non-cash operating lease expense	16,710	15,896
Non-cash interest expense	8,758	9,572
Changes in operating assets and liabilities balances:
Accounts receivable	22,958	(92,069)
Inventories	(94,056)	(114,156)
Prepaid expenses and other current assets	(25,655)	(23,348)
Accounts payable	(84,417)	7,712
Customer deposits	96,285	192,745
Accrued expenses and other current liabilities	(27,876)	(29,032)
Due to shareholder	(15,287)	2,770
Payments of operating lease liability	(25,468)	(25,468)
Net cash provided by (used in) operating activities	(261,196)	43,755
Cash flows provided (used) in financing activities:
Proceeds from line of credit	25,000	78,000
Repayments of line of credit		(212,762)
Proceeds from PPP loan	381,000
Repayments on capital lease payable	(8,046)	(8,047)
Net cash provided by (used in) financing activities	397,954	(142,809)
Net increase (decrease) in cash and cash equivalents	136,758	(99,054)
Cash and cash equivalents - beginning of period	1,438,714	1,555,687
Cash and cash equivalents - end of period	1,575,472	1,456,633
Cash paid for:
Interest	1,275	704
Non-cash operating activities:
Operating lease right-of-use asset and liability recorded upon adoption of ASC 842		$ 771,098