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Inventories
 12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Inventories

3. Inventories

Inventories consisted of:

 

 

 

December 31,

 

 

 

2020

 

 

2019

 

Finished goods

 

$

40,287,710

 

 

$

32,899,114

 

Work in process

 

 

67,208

 

 

 

274,158

 

Materials and supplies

 

 

10,349,279

 

 

 

6,087,833

 

Inventories:

 

$

50,704,197

 

 

$

39,261,105

 

 

Inventories are stated net of valuation allowances for slow moving and obsolete inventory of $1,471,925 as of December 31, 2020 and $696,486 as of December 31, 2019.