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Trade Accounts Receivable (Tables)
9 Months Ended
Dec. 31, 2019
Receivables [Abstract]  
Schedule of trade accounts receivable
   December 31,
2019
   March 31,
2019
 
Accounts receivable  $13,856,012   $11,939,364 
Less: allowance for doubtful accounts   (2,390,700)   (3,246,850)
Trade accounts receivable, net  $11,465,402   $8,692,514