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Concentrations and Credit Risk (Tables)
12 Months Ended
Dec. 31, 2018
Concentrations and Credit Risk Tables [Abstract]  
Schedule of revenue by major customers by reporting segments

   Year ended   Year ended 
   December 31, 2017   December 31, 2018 
Customer A  $ 12,869,446   22.05%  $ *   * 
Customer B   29,837,878    51.11%    *   * 
Customer C   *    *    6,330,608      25.91%
Customer D   *    *    3,807,854    15.58%

 

*Comprised less than 10% of net revenue for the respective period.
Schedule of accounts receivable by major customer

   December 31, 2017   December 31, 2018 
Customer A    $*     *   $*    * 
Customer B   23,835,201    62.08%    *     * 
Customer C    *    *    1,769,416    11.49%
Customer D    *     *    4,283,023    27.82%
Customer E   4,855,518    12.65%    *     * 
Customer F   4,664,285    12.15%    *     * 
Customer G    *    *    2,293,257    14.89%

Schedule of transactions with the former subsidiaries
   December 31, 2017   December 31, 2018 
Purchase of inventories from        
BAK Tianjin  $126,567   $716,997 
BAK Shenzhen**   27,903,206    107,280 
Zhengzhou BAK Battery Co., Ltd*   -    2,032,756 
           
Sales of finished goods to          
BAK Tianjin   141,117    36,766 
BAK Shenzhen   61,961    - 
Zhengzhou BAK Battery Co., Ltd*   29,867    - 
           
Proceeds on disposal of patented proprietary technology offset against amount due to BAK Shenzhen (Note 7)**   -    12,845,795 

 

*Mr. Xiangqian Li, the former CEO, is a director of this company. As of December 31, 2018 and December 31, 2017, payable to Zhengzhou BAK Battery Co., Ltd were $2,291,621 and nil, respectively, was included in trade accounts and bills payable.

 

**Mr. Xiangqian Li, our former CEO, is a director of this company.