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ACCOUNTS RECEIVABLE
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Receivables [Abstract]    
ACCOUNTS RECEIVABLE

4. Accounts Receivable

ACCOUNTS RECEIVABLE

 

   March 31, 2022   December 31, 2021 
         
Accounts receivable  $10,217,709   $7,403,308 
Allowances for doubtful accounts   (274,561)   (273,979)
Total accounts receivable  $9,943,148   $7,129,329 

 

 

4. Accounts Receivable

 SCHEDULE OF ACCOUNTS RECEIVABLE

   2021   2020 
         
Accounts receivable  $7,403,308   $6,161,249 
Allowances for doubtful accounts   (273,979)   (271,436)
Total accounts receivable  $7,129,329   $5,889,813