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Property, Plant and Equipment (Tables)
12 Months Ended
Jun. 30, 2023
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment Property, plant and equipment at June 30, 2023 and 2022 is as follows:
   2023   2022 
Land  $45,000   $45,000 
Building and improvements   4,811,179    4,450,399 
Machinery and equipment   11,402,679    11,287,648 
Furniture and fixtures   164,200    164,200 
    16,423,058    15,947,247 
Accumulated depreciation   (13,597,969)   (13,149,254)
Property, plant and equipment, net  $2,825,089   $2,797,993