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REVENUE (Tables) | 6 Months Ended
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Sep. 30, 2023
REVENUE |
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, 2023 | ​ | $ | 7,959,628 | ​ | $ | 10,458 | ​ | $ | 7,970,086
Three months ended September 30, 2022 | ​ | $ | 8,385,441 | ​ | $ | 137,206 | ​ | $ | 8,522,647
Six months ended September 30, 2023 | ​ | $ | 15,159,032 | ​ | $ | 182,294 | ​ | $ | 15,341,326
Six months ended September 30, 2022 | ​ | $ | 15,226,365 | ​ | $ | 372,639 | ​ | $ | 15,599,004
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net Sales by contract type |  | Over-time |  | Point-in-time |  | Totals
Three months ended September 30, 2023 | ​ | $ | 7,413,656 | ​ | $ | 556,430 | ​ | $ | 7,970,086
Three months ended September 30, 2022 | ​ | $ | 8,219,139 | ​ | $ | 303,508 | ​ | $ | 8,522,647
Six months ended September 30, 2023 | ​ | $ | 14,347,460 | ​ | $ | 993,866 | ​ | $ | 15,341,326
Six months ended September 30, 2022 | ​ | $ | 14,841,232 | ​ | $ | 757,772 | ​ | $ | 15,599,004
Schedule of contract assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Progress | ​ | ​ | ​
​ |  | Unbilled |  | payments |  | Total
September 30, 2023 | ​ | $ | 20,183,772 | ​ | $ | (12,087,164) | ​ | $ | 8,096,608
March 31, 2023 | ​ | $ | 19,485,914 | ​ | $ | (10,538,103) | ​ | $ | 8,947,811
​
Sales |
REVENUE |
Schedule of trade accounts receivable from customers who accounted for more than 10% | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Three months ended | ​ | Six months ended | ​ | Six months ended | ​
​ | ​ | September 30, 2023 | ​ | September 30, 2022 |  | September 30, 2023 | ​ | September 30, 2022 | ​
Customer |  | Amount |  | Percent |  | Amount |  | Percent |  | Amount |  | Percent |  | Amount |  | Percent |
A | ​ | $ | 2,560,204 |  | 32 | % | $ | 1,438,049 |  | 17 | % | $ | 4,845,478 | ​ | 32 | % | $ | 2,734,436 | ​ | 18 | %
B | ​ | $ | 999,540 |  | 13 | % | $ | * |  | * | % | $ | 1,742,776 | ​ | 11 | % | $ | * | ​ | * | %
C | ​ | $ | * | ​ | * | % | $ | 1,614,929 | ​ | 19 | % | $ | * | ​ | * | % | $ | 3,378,520 | ​ | 22 | %
D | ​ | $ | * | ​ | * | % | $ | 1,971,441 | ​ | 23 | % | $ | * | ​ | * | % | $ | 3,043,315 | ​ | 20 | %
*Less than 10% of total

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