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CONCENTRATION OF CREDIT RISK (Tables) | 6 Months Ended
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Sep. 30, 2023
Accounts Receivable |
CONCENTRATION OF CREDIT RISK |
Schedule of trade accounts receivable from customers who accounted for more than 10% | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2023 | ​ | March 31, 2023 |
Customer |  | Dollars |  | Percent |  | Dollars |  | Percent |
A | ​ | $ | 809,255 |  | 28 | % | $ | 730,514 |  | 31 | %
B | ​ | $ | * |  | * | % | $ | 260,177 |  | 11 | %
C | ​ | $ | 448,127 |  | 15 | % | $ | * |  | * | %
D | ​ | $ | * |  | * | % | $ | 265,755 |  | 11 | %
E | ​ | $ | 375,811 |  | 13 | % | $ | * |  | * | %
*less than 10% of total

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