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REVENUE (Tables) | 6 Months Ended
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Sep. 30, 2022
Schedule of net sales on a disaggregated basis by market and contract type | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net Sales by market |  | Defense |  | Industrial |  | Totals
Three months ended September 30, 2022 | ​ | $ | 8,385,441 | ​ | $ | 137,206 | ​ | $ | 8,522,647
Three months ended September 30, 2021 | ​ | $ | 4,403,156 | ​ | $ | 394,254 | ​ | $ | 4,797,410
Six months ended September 30, 2022 | ​ | $ | 15,226,365 | ​ | $ | 372,639 | ​ | $ | 15,599,004
Six months ended September 30, 2021 | ​ | $ | 7,506,287 | ​ | $ | 703,352 | ​ | $ | 8,209,639
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net Sales by contract type |  | Over-time |  | Point-in-time |  | Totals
Three months ended September 30, 2022 | ​ | $ | 8,219,139 | ​ | $ | 303,508 | ​ | $ | 8,522,647
Three months ended September 30, 2021 | ​ | $ | 3,757,988 | ​ | $ | 1,039,422 | ​ | $ | 4,797,410
Six months ended September 30, 2022 | ​ | $ | 14,841,232 | ​ | $ | 757,772 | ​ | $ | 15,599,004
Six months ended September 30, 2021 | ​ | $ | 6,880,637 | ​ | $ | 1,329,002 |  | $ | 8,209,639
Schedule of contract assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Progress | ​ | ​
​ |  | Unbilled |  | payments |  | Total
September 30, 2022 | ​ | $ | 17,522,148 | ​ | $ | (8,302,064) | ​ | $ | 9,220,084
March 31, 2022 | ​ | $ | 14,216,187 | ​ | $ | (5,865,956) | ​ | $ | 8,350,231
Sales |
Schedule of revenues from customers who accounted for more than 10% of our net sales | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Three months ended | ​ | Six months ended | ​ | Six months ended |
​ |  | September 30, 2022 |  | September 30, 2021 | ​ | September 30, 2022 |  | September 30, 2021 |
Customer |  | Amount |  | Percent |  | Amount |  | Percent |  | Amount |  | Percent |  | Amount |  | Percent |
A | ​ | $ | 1,438,049 |  | 17 | % | $ | 1,175,893 |  | 25 | % | $ | 2,734,436 |  | 18 | % | $ | 2,479,665 |  | 30 | %
B | ​ | $ | * |  | * | % | $ | 721,405 |  | 15 | % | $ | * | ​ | * | % | $ | 1,660,261 |  | 20 | %
C | ​ | $ | * |  | * | % | $ | 648,954 |  | 14 | % | $ | * |  | * | % | $ | 938,534 |  | 11 | %
D | ​ | $ | 1,614,929 |  | 19 | % | $ | * |  | * | % | $ | 3,378,520 |  | 22 | % | $ | * |  | * | %
E | ​ | $ | 1,971,441 | ​ | 23 | % | $ | * | ​ | * | % | $ | 3,043,315 | ​ | 20 | % | $ | * | ​ | * | %
*Less than 10% of total

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