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Property, Plant and Equipment (Tables)
3 Months Ended
Sep. 30, 2020
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment
   September 30,   June 30, 
   2020   2020 
Building and improvements  $39,322,322   $37,799,650 
Auto   3,325,579    3,207,619 
Machinery and equipment   18,312,530    17,601,852 
Total property, plant and equipment   60,960,431    58,609,121 
Less: accumulated depreciation   (37,836,354)   (35,680,787)
Total  $23,124,076   $22,928,334