Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income	$ 1,299,281	$ 1,904,269
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	405,022	357,594
Deferred income taxes	105,363	(88,566)
Provision for bad debts	80,003	88,289
Provision for slow moving and obsolete inventory	70,049	9,756
Other operating non-cash items	311	(1,572)
Changes in assets and liabilities:
Trade accounts receivable	(797,417)	(2,110,546)
Receivables due from affiliated companies	364,973	358,826
Inventories	(3,225,694)	(1,068,795)
Prepaid expenses and other current assets	508,494	(162,596)
Accounts payable – trade	499,359	1,174,548
Income taxes payable	163,047	576,626
Accrued expenses payable	288,372	169,969
Net cash (used in) provided by operating activities	(238,837)	1,207,802
Cash flows from investing activities:
Purchases of property, plant and equipment	(1,610,684)	(915,899)
Net cash used in investing activities	(1,610,684)	(915,899)
Cash flows from financing activities:
Payments on long-term debt	(233,104)	(130,092)
Dividends paid to common shareholders	(380,392)	(284,454)
Repurchase of common stock	(5,645)
Net cash used in financing activities	(619,141)	(414,546)
Effect of exchange rate on cash	651	976
Net decrease in cash and restricted cash	(2,468,011)	(121,667)
Cash and restricted cash at beginning of period	12,684,935	11,601,152
Cash and restricted cash at end of period	10,216,924	11,479,485
Supplemental disclosure of cash flow information:
Cash paid for interest during period	28,786	32,606
Cash paid for income taxes during period	65,000
Cash paid under operating lease	23,700	23,700
Cash	10,216,924	11,161,761
Restricted cash		317,724
Total cash and restricted cash	$ 10,216,924	$ 11,479,485