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ADVANCES FROM CUSTOMERS (Tables)
 12 Months Ended
Dec. 31, 2019
ADVANCES FROM CUSTOMERS  
Contract with Customer, Asset and Liability

Advances from customers consist of the following and is analyzed as long-term and short-term portion respectively:

 

 

 

 

 

 

 

 

 

December 31, 

 

    

2018

    

2019

Customer A

 

$

15,827,579

 

$

28,123,324

Customer B

 

 

392,037

 

 

4,184,426

Customer D

 

 

 —

 

 

1,503,529

Customer E

 

 

1,017,427

 

 

905,840

Others

 

 

245,897

 

 

464,976

Total

 

$

17,482,940

 

$

35,182,095

Less: Advances from customers – short-term portion

 

$

10,213,940

 

$

33,027,795

Advances from customers – long-term portion

 

$

7,269,000

 

$

2,154,300