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Transition period (Tables)
 12 Months Ended
Dec. 31, 2017
Schedule of unaudited comparative financial information [Table Text Block]

 

   Three months ended December 31,  

 

   2015     2016  

 

   (unaudited)        

Net revenues

 $ 5,500,589   $ 3,500,516  

Cost of revenues

   (5,658,887 )   (3,974,617 )

Gross loss

   (158,298 )   (474,101 )

Operating expenses:

            

 Research and development expenses

   (747,537 )   (439,005 )

 Sales and marketing expenses

   (170,458 )   (172,972 )

 General and administrative expenses

   (1,029,711 )   (1,109,297 )

 Provision for doubtful accounts

   -     (44,861 )

 Total operating expenses

   (1,947,706 )   (1,766,135 )

Operating loss

   (2,106,004 )   (2,240,236 )

Finance income, net

   2,006     9,000  

Other income, net

   43,392     36,839  

Loss before income tax

   (2,060,606 )   (2,194,397 )

Income tax expense

   (72,067 )   -  

Net loss

   (2,132,673 )   (2,194,397 )

 

            

Loss per share – Basic and diluted

 $ (0.12 ) $ (0.11 )

 

            

Weighted average number of shares of common stock – Basic and diluted

   17,171,953     19,745,873