Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 109,737	$ 1,205,760
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	39,273	17,538
Stock based compensation		98,600
Write-off of inventories	312,830	8,343
Bad debt	100,000
Deferred taxes	(166,000)	(69,000)
Changes in operating assets and liabilities balances:
Accounts receivable	(444,874)	(273,744)
Inventories	(198,497)	(165,985)
Prepaid expenses and other current assets	37,039	(104,596)
Accounts payable	17,957	(7,164)
Customer deposits	(2,975)	16,800
Accrued expenses and other current liabilities	651	(182,500)
Due to stockholder	(65,011)	(51,134)
Net cash provided by (used in) operating activities	(259,870)	492,918
Cash flows from investing activities:
Purchase of equipment		(31,474)
Restricted cash		233,050
Net cash provided by investing activities		201,576
Cash flows from financing activities:
Repayments of notes payable		(96,966)
Repayments of capital lease payable	(28,874)	(14,100)
Net cash (used in) financing activities	(28,874)	(111,066)
Net increase (decrease) in cash and cash equivalents	(288,744)	583,428
Cash and cash equivalents - beginning of year	1,982,276	1,398,848
Cash and cash equivalents - end of year	1,693,532	1,982,276
Cash paid for:
Interest	6,707	4,947
Taxes		31,604
Non-cash investing activities
Purchase of equipment with the assumption of capital lease obligation		$ 128,807