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Revenue (Details) - USD ($)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Revenues	$ 38,464,821	$ 34,967,963
PMO
Revenues	15,882,189	14,639,687
Infrared Products
Revenues	20,971,080	18,052,856
Specialty Products
Revenues	$ 1,611,552	$ 2,275,420

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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