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Schedule of Inventory (Details) - USD ($) | Dec. 26, 2020 | Dec. 28, 2019
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Accounting Policies [Abstract] |  |
Raw materials | $ 3,609,710 | $ 2,630,156
Work-in-process | 565,986 | 711,475
Finished goods | 280,060 | 427,065
Total | $ 4,455,756 | $ 3,768,696

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