Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities
Net Income (loss)	$ (1,894,643)	$ 601,217
Adjustments to reconcile net income (loss) to net cash used in operating activities
Depreciation	612,107	640,848
Gain on disposal of equipment	(31,500)	0
Deferred income taxes	(84,000)	(46,000)
Changes in operating assets and liabilities
Accounts receivable	(929,264)	(1,194,243)
Inventories	(302,013)	(1,095,593)
Other current assets	(475,252)	(78,145)
Accounts payable	537,088	382,910
Accrued wages and salaries	115,325	235,473
Other accrued expenses	(243,717)	91,825
Unearned revenue and customer deposits	331,781	(75,713)
Net cash used in operating activities	(2,364,088)	(537,421)
Cash flows from investing activities
Capital expenditures	(760,248)	(211,703)
Proceeds from the sale of equipment	31,500	0
Proceeds from certificates of deposit	997,000	0
Net cash provided by (used in) investing activities	268,252	(211,703)
Cash flows from financing activities
Cash dividends paid	(425,098)	(425,098)
Net cash used in financing activities	(425,098)	(425,098)
Net decrease in cash and cash equivalents	(2,520,934)	(1,174,222)
Cash and cash equivalents at beginning of period	4,045,101	2,036,954
Cash and cash equivalents at end of period	$ 1,524,167	$ 862,732