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Bank Loans (Tables)
3 Months Ended
Mar. 31, 2021
Bank Loans Abstract [Abstract]  
Schedule of short-term bank loan
   March 31,   December 31, 
   2021   2020 
Cathay United Bank  $263,250   $267,000 
CTBC Bank   702,000    712,000 
Cathay Bank   650,000    650,000 
Total  $1,615,250   $1,629,000