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CONCENTRATION OF CREDIT RISK (Tables) | 6 Months Ended
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Sep. 30, 2022
Accounts Receivable |
Concentration of credit risk and major customers |
Schedule of revenues from customers who accounted for more than 10% of our net sales | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2022 | ​ | March 31, 2022 |
Customer |  | Dollars |  | Percent |  | Dollars |  | Percent |
A | ​ | $ | * | ​ | * | % | $ | 1,079,264 | ​ | 36 | %
B | ​ | $ | * |  | * | % | $ | 436,051 |  | 14 | %
C | ​ | $ | 504,803 |  | 25 | % | $ | * |  | * | %
D | ​ | $ | 418,448 | ​ | 21 | % | $ | 382,789 | ​ | 13 | %
E | ​ | $ | 383,608 | ​ | 19 | % | $ | * | ​ | * | %
F | ​ | $ | * | ​ | * | % | $ | 309,500 | ​ | 10 | %
G | ​ | $ | 216,327 | ​ | 11 | % | $ | * | ​ | * | %
*less than 10% of total

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