v3.26.1
Statements of Cash Flows (Unaudited) - USD ($)
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash flows from operating activities:    
Net income $ 1,547,481 $ 1,187,721
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 58,374 50,184
Net gain on marketable securities (66,107) (36,926)
Gain on sale of asset (8,310)  
Allowance for credit losses 4,101 7,286
Change in allowance for obsolete inventory (8,000) (2,786)
Deferred income taxes 17,105 253,703
(Increase) decrease in operating assets:    
Accounts receivable (108,031) (486,325)
Inventories 336,313 (77,036)
Prepaid expenses and other current assets (3,045) (26,028)
Prepaid income taxes 285,344 (193,643)
Increase (decrease) in operating liabilities:    
Accounts payable 18,963 (9,395)
Accrued expenses 54,385 (170,064)
Deferred revenue (4,042) 128,632
Net cash provided by operating activities 2,124,531 625,323
Cash flows from investing activities:    
Acquisition of property, plant, and equipment (29,004) (21,221)
Proceeds from sale of asset 8,310  
Proceeds from sale of marketable securities 6,673,508 7,301,264
Purchase of marketable securities (6,487,812) (6,394,357)
Net cash provided by investing activities 165,002 885,686
Cash flows from financing activities:    
Dividends paid (1,149,892) (1,618,183)
Net cash used in financing activities (1,149,892) (1,618,183)
Net increase (decrease) in cash and cash equivalents 1,139,641 (107,174)
Cash and cash equivalents at beginning of period 1,251,097 1,875,655
Cash and cash equivalents at end of period 2,390,738 1,768,481
Supplemental disclosure of cash flow information    
Taxes paid 100,813 250,780
Supplemental disclosure of non-cash items:    
Dividends payable $ 44 $ 119