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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Cash Flows From Operating Activities    
Net income $ 346,208 $ 219,536
Adjustments to reconcile net income from operations to net cash used in operating activities:    
Depreciation and amortization 89,752 85,242
Loss on sale of equipment 40,045
Changes in operating assets and liabilities:    
Trade receivables, net (209,217) 24,413
Trade receivables, related party, net (39,215) 67,985
Inventories (3,190) (156,391)
Prepaid expenses (188,287) (264,297)
Note receivable 8,317
Other assets 39,038 30,526
Accounts payable and accrued expenses (308,133) (858,148)
Accounts payable, related party (212,616) (153,411)
Customer deposits and other liabilities 155,458 92,728
Net cash used in operating activities (281,840) (911,817)
Cash Flows From Investing Activities:    
Purchase of property and equipment (86,074) (33,750)
Net cash used in investing activities (86,074) (33,750)
Cash Flows From Financing Activities:    
Payments on capital lease obligations (1,181) (4,287)
Net cash used in financing activities (1,181) (4,287)
Net change in cash and cash equivalents (369,095) (949,854)
Cash and cash equivalents, beginning of period 1,272,208 1,412,082
Cash and cash equivalents, end of period 903,113 462,228
Supplemental Disclosures:    
Cash paid during the period for: Interest 46,882 49,840
Cash paid during the period for: Income taxes