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INVENTORY
9 Months Ended
Sep. 28, 2019
Inventory Disclosure [Abstract]  
INVENTORY
INVENTORY
Inventories are stated at standard cost adjusted to approximate the lower of cost (first-in, first-out method) or net realizable value and consist of the following at September 28, 2019 and December 29, 2018:
 
September 28, 2019
 
December 29, 2018
Raw materials
$
2,539,460

 
$
2,548,139

Work-in-process
724,820

 
1,526,552

Finished goods
178,210

 
722,547

 
$
3,442,490

 
$
4,797,238


In the nine months ended September 28, 2019 the Company charged $2.7 million for inventory obsolescence. The charges for inventory obsolescence primarily resulted from the discontinuance of certain products and the write-off of materials as we have found substitute materials that will provide for better long-term manufacturing yields.