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Geographical Information (Tables)
3 Months Ended
Jun. 30, 2020
Segment Reporting [Abstract]  
Schedule of Revenue by Geographical Region

Sales to customers outside of the United States for the three months ended June 30, 2020 and 2019 were primarily made by the Macau Subsidiary in US dollars. Sales by geographic region for the periods presented are as follows:

 

    June 30,  
    2020     2019  
             
North America   $ 3,087,707     $ 4,613,772  
Europe     182,812       99,424  
Australia     53,024       95,844  
    $ 3,323,543     $ 4,809,040