PROPERTY, PLANT, AND EQUIPMENT

12 Months Ended

Dec. 31, 2022

PROPERTY, PLANT, AND EQUIPMENT

PROPERTY, PLANT, AND EQUIPMENT

5.   PROPERTY, PLANT, AND EQUIPMENT

Property, plant, and equipment consist of the following:

	December 31,
	2022		2021
Land	$	261,893	$	261,893
Buildings and building improvements		25,038,429		24,364,084
Production equipment		86,330,729		34,112,766
Office furniture and equipment		4,811,703		4,089,362
Construction in progress		15,896,433		52,681,005
		132,339,187		115,509,110
Accumulated depreciation		(32,186,419)		(27,583,459)
	$	100,152,768	$	87,925,651

Depreciation expense for the years ended December 31, 2022, 2021, and 2020 was $4,602,961; $1,257,417; and $832,069, respectively.