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REVENUE - Contract Assets and Contract Liabilities (Details) - USD ($) | Sep. 30, 2021 | Mar. 31, 2021
--- | --- | ---
Contract assets | $ 9,306,862 | $ 5,532,408
Unbilled |  |
Contract assets | 12,725,048 | 11,392,948
Progress payments |  |
Contract assets | $ (3,418,186) | $ (5,860,540)

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