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Concentrations and Credit Risk (Tables)
9 Months Ended
Sep. 30, 2021
Risks and Uncertainties [Abstract]  
Schedule of customers that individually comprised 10% or more of net revenue
   Three months ended
September 30,
 
   2020   2021 
Sales of finished goods and raw materials                
Customer A  $1,588,192    14.95%  $
*
   
*
Customer C   1,278,893    12.04%   3,103,626    32.46%
Customer D   
*
    
*
    1,081,071    11.31%
Zhengzhou BAK Battery Co., Ltd (note a)   4,269,312    40.20%   
*
    
*
 
Zhengzhou BAK New Energy Technology Co., Ltd (note d)   1,896,207    17.85%   
*
    
*
 

 

  * Comprised less than 10% of net revenue for the respective period.

 

   Nine months ended
September 30,
 
   2020   2021 
Sales of finished goods and raw materials                
Customer A  $5,793,828    26.16%  $2,583,245    10.39%
Customer B   
*
    
*
    2,777,456    11.17%
Customer C   2,908,728    13.13%   4,693,308    18.87%
Customer D   
*
    
*
    3,360,174    13.51%
Customer E   3,787,585    17.10%   
*
    
*
 
Zhengzhou BAK Battery Co., Ltd (note a)   4,269,312    19.28

%

   
*
    
*
 

 

  * Comprised less than 10% of net revenue for the respective period.

 

   December 31,
2020
   September 30,
2021
 
Customer A  $3,148,737    11.23%  $2,845,127    12.94%
Customer C   
*
    
*
    3,538,038    16.10%
Zhengzhou BAK Battery Co., Ltd (note a)   15,258,164    54.42%   4,562,413    20.76%

 

  * Comprised less than 10% of account receivable (net) for the respective period.

 

Schedule of suppliers that individually comprised 10% or more of net purchase
   Three months ended September 30, 
   2020   2021 
Supplier A  $
*
   
*
  $810,963    13.29%
Supplier B   4,329,602    72.65%   704,401    11.54%

 

   Nine months ended September 30, 
   2020   2021 
Supplier B   4,329,602    36.47%   *    * 
Shenzhen BAK (note b)   3,841,680    32.35%   *    * 

 

  * Comprised less than 10% of net purchase for the respective period.

 

   December 31,
2020
   September 30,
2021
 
Supplier B  $9,272,478    47.40%  $
*
   *
Supplier C   2,017,814    10.32%   970,564    17.99%
Supplier D   *    *    709,952    13.16%

 

Schedule of transactions
   Three months ended
September 30,
   Nine months ended
September 30,
 
   2020   2021   2020   2021 
Purchase of inventories from                
Zhengzhou BAK Battery Co., Ltd (note a)   
-
    477,185    
-
    1,736,494 
                     
Sales of finished goods and raw materials to                    
BAK Shenzhen (note b)   
-
    
-
         18,402 
Zhengzhou BAK Electronics Co., Ltd (note c)   
-
    746    
-
    413,099 
Zhengzhou BAK Battery Co., Ltd (note a)   
-
    6,982         148,564 

 

   December 31,
2020
   September 30,
2021
 
Trade accounts and bills receivables, net        
Zhengzhou BAK Electronics Co., Ltd (note c)  $
  -
    422,080 
Zhengzhou BAK New Energy Technology Co., Ltd (note d)   1,759,050    840,675 

 

  Notes:  
  a Mr. Xiangqian Li, the Company’s former CEO, is a director of Zhengzhou BAK Battery Co., Ltd.
   b Mr. Xiangqian Li is a director of BAK Shenzhen and Shenzhen BAK.
  c

BAK Shenzhen has 95% equity interests in Zhengzhou BAK Electronics Co., Ltd. Up to the date of this report, Zhengzhou BAK Electronics Co., Ltd. repaid $27,839 to the Company.

  d

Mr. Xiangqian Li, is a director of Zhengzhou BAK New Energy Technology Co., Ltd. Up to the date of this report, Zhengzhou BAK New Energy Technology Co., Ltd repaid $219,943 to the Company.