Note 5 - Property, Plant and Equipment (Tables)

9 Months Ended

Mar. 31, 2022

Notes Tables

Property, Plant and Equipment [Table Text Block]

	March 31,			June 30,
	2022			2021
Plant and equipment(1)	$	2,277,545		$	2,147,617
Furniture and office equipment		248,180			246,697
Vehicles		425,396			613,891
Land and building		608,721			412,681
Total property, plant and equipment		3,559,842			3,420,886
Accumulated depreciation (2)		(2,000,690	)		(1,847,441	)
Total property and equipment, net	$	1,559,152		$	1,573,445