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Inventory (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2019
Inventory |
Schedule of inventory |
|  | June 30, |  | December 31,
|  | 2019 |  | 2018
|  | (unaudited) |  |  |
Raw materials |  | $ | 3,361,192 |  | $ | 3,408,158
Work in process |  |  | 364,884 |  |  | 305,562
Finished goods |  |  | 878,658 |  |  | 557,566
Inventory before allowance for excess and obsolete |  |  | 4,604,734 |  |  | 4,271,286
Allowance for excess and obsolete |  |  | (236,083) |  |  | (211,843)
Total |  | $ | 4,368,651 |  | $ | 4,059,443

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