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Note H - Investment in Unconsolidated Subsidiaries - Summarized Financial Information (Unaudited) of Milestone China (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Current liabilities | $ 17,696,033 | $ 18,468,937
Stockholders' deficit | (2,504,900) | (2,127,995)
Total liabilities and stockholders’ deficit | 15,191,133 | 16,340,942
Net sales | 7,598,998 | 1,394,760
Cost of goods sold | 3,539,138 | 477,200
Gross profit | 4,059,860 | 917,560
Other expenses | (4,642,154) | (5,975,360)
Net Losses | (582,294) | (5,057,800)
Milestone China [Member] |  |
Current assets | 10,587,648 | 13,127,422
Non-current assets | 4,603,485 | 3,213,520
Total assets: | $ 15,191,133 | $ 16,340,942

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