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Property, plant and equipment
3 Months Ended
Mar. 31, 2023
Property, plant and equipment [Abstract]  
Property, plant and equipment

6.

Property, plant and equipment


Property, plant and equipment are stated at cost less accumulated depreciation and amortization and depreciated using the straight-line method over their useful lives. At March 31, 2023 and December 31, 2022, the Company’s property, plant and equipment, net consisted of the following: 

 

 


 

2023

 

 

2022

 

 

Computer equipment and software 

 

$

94,530

 

 

$

94,530

 

 

Furniture and other equipment 

 

 

271,798

 

 

 

271,798

 


Leasehold improvements 


17,280


17,280

Equipment and machinery

943,464


943,464

Automobiles

4,638


4,638

Building held for leases

196,416


196,416

Laboratory and temporary units 

1,364,748


1,364,748

Land

1,190,655



1,190,655

Construction in progress 

2,771,649


2,244,100

 

      Property, plant and equipment

 

 

6,855,178

 

 

 

6,327,629

 

 

Less: accumulated depreciation

 

 

(810,919

)

 

 

(718,726

)

 

      Property, plant and equipment, net 

 

$

6,044,259

 

 

$

5,608,903

 

 

Depreciation expense for the three months ended March 31, 2023 and 2022 amounted to $92,193 and $104,825 respectively.