v3.25.2
Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Cash flows from operating activities    
Net loss $ (273,479) $ (387,496)
Adjustments to reconcile net loss to net cash provided by operating activities    
Depreciation and amortization 198,982 200,422
Accretion of obligation for lease disposal costs 36,410 34,753
Equity based compensation 65,797 84,400
Gain on sale of property, plant, and equipment 0 (13,492)
Right-of-use asset changes, net (2,239) (2,238)
Changes in operating assets and liabilities:    
Accounts receivable (211,559) 333,311
Inventories 150,351 227,840
Prepaids and other current assets 386,046 363,258
Accounts payable and accrued liabilities (95,362) (352,984)
Unearned revenues 55,499 (199,177)
Net cash provided by operating activities 310,446 288,597
Cash flows from investing activities:    
Proceeds from sale of property, plant, and equipment 0 36,000
Purchase of property, plant and equipment (190,374) (214,936)
Net cash used in investing activities (190,374) (178,936)
Cash flows from financing activities:    
Proceeds from sale of stock and exercise of options and warrants 10,896 4,865
Payments on financing lease 0 (1,523)
Proceeds from the issuance of notes payable 45,515 0
Principal payments on notes payable (232,012) (94,365)
Net cash used in financing activities (175,601) (91,023)
Net (decrease) increase in cash, cash equivalents, and restricted cash (55,529) 18,638
Cash, cash equivalents, and restricted cash at beginning of period 3,377,233 3,568,893
Cash, cash equivalents, and restricted cash at end of period 3,321,704 3,587,531
Supplemental disclosure of cash flow activities:    
Cash paid for interest 156,384 155,681
Cash paid for income taxes 66 0
Supplemental disclosure of noncash financing and investing transactions    
Decrease in current installments of notes payable for issuance of stock 25,000 0
Increase in operating lease right-of-use asset and right-of-use liability for new lease 830,720 0
Decrease in accrued interest and increase in equity for conversion of dividends to stock 90,660 90,420
Cash and cash equivalents 1,859,424 2,191,108
Restricted cash included in long-term assets 1,462,280 1,396,423
Total cash, cash equivalents, and restricted cash shown in statement of cash flows $ 3,321,704 $ 3,587,531