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5. INVENTORIES, NET
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
INVENTORIES, NET

Inventory is recorded at the lower of cost or net realizable value. The cost of substantially all the Company’s inventory is determined by the FIFO cost method. Inventories consisted of the following:

 

    December 31,     December 31,  
    2020     2019  
Finished goods   $ 1,248,893     $ 653,323  
Work in process     64,451       413  
Raw materials     1,342,046       1,590,805  
Inventories, net   $ 2,655,390     $ 2,244,541  

 

During the years ended December 31, 2020 and 2019 the Company wrote off $68,108 and $193,506, respectively, of raw material and scrap parts primarily due to startup production, model changes and improvements.