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Revenue (Details) - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Revenues	$ 34,967,963	$ 33,749,088
PMO
Revenues	14,639,687	14,098,157
Infrared Products
Revenues	18,052,856	17,271,590
Specialty Products
Revenues	$ 2,275,420	$ 2,379,341

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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