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Inventories - Summary of Inventories, Net (Details) - USD ($) | Mar. 31, 2022 | Dec. 31, 2021
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Inventory Disclosure [Abstract] |  |
Raw materials | $ 8,334,178 | $ 5,603,868
Sub-assemblies | 289,304 | 495,320
Work-in-process | 624,607 | 518,838
Finished goods | 7,764,973 | 6,228,892
Inventory gross | 17,013,062 | 12,846,918
Less: reserves for obsolete and slow-moving inventories | (582,678) | (569,045)
Inventory net | $ 16,430,384 | $ 12,277,873

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