Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Investment in and Transactions with Unconsolidated Subsidiaries - Summarized Financial Information (Unaudited) of Milestone China (Details)

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Note 6 - Investment in and Transactions with Unconsolidated Subsidiaries - Summarized Financial Information (Unaudited) of Milestone China (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Total assets: $ 18,941,168   $ 18,941,168   $ 15,191,133
Current liabilities 23,276,964   23,276,964   17,696,033
Stockholders' deficit (4,335,796)   (4,335,796)   (2,504,900)
Total liabilities and stockholders’ deficit 18,941,168   18,941,168   15,191,133
Net sales 1,149,474 $ 1,328,079 1,753,802 $ 2,085,034  
Cost of goods sold 324,300 650,840 559,400 1,098,452  
Gross profit 825,174 677,239 1,194,402 986,582  
Other expenses (1,423,353) (1,119,440) (3,302,057) (2,371,652)  
Net loss (598,179) $ (442,201) (2,107,655) $ (1,385,070)  
Milestone China [Member]          
Current assets 13,966,781   13,966,781   10,587,648
Non-current assets $ 4,974,387   $ 4,974,387   $ 4,603,485