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Bank Loans (Tables)
12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Schedule of short-term bank loans
   December 31,
2021
   December 31,
2020
 
Bank  (In thousands of
U.S. Dollars)
 
Shanghai Pudong Development Bank  $39,200   $42,157 
Industrial and Commercial Bank of China   21,952    21,462 
Nanjing Bank   7,840    2,300 
   $68,992   $65,919