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Inventories (Tables)
6 Months Ended
Jun. 27, 2020
Inventory Disclosure [Abstract]  
Schedule of net components of inventories
The components of inventories are as follows:
At June 27, 2020At December 31, 2019
Finished goods$1,377,173  1,610,742  
Work in process117,588  144,639  
Raw materials427,287  526,947  
Total inventories$1,922,048  2,282,328