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Selling Expenses
 12 Months Ended
Dec. 31, 2019
Selling and Marketing Expense [Abstract]  
SELLING EXPENSES

15.SELLING EXPENSES

 

The Company's selling expenses consist of the followings:

 

   Year ended December 31, 
   2019   2018   2017 
Salaries and social welfare  $761,774   $1,765,019   $805,048 
Travelling expenses   34,244    170,931    150,648 
Service fee   12,369    41,437    84,445 
Advertising & promotion   19,811    56,259    

76,592

 
Entertainment fee   4,848    42,656    35,438 
Office expense   -    1,960    7,302 
Others   2,224    4,567    10,905 
Total Selling expenses  $835,270   $2,082,829   $1,170,378