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Revenue (Details) - USD ($)	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Revenues	$ 9,508,972	$ 7,551,930
PMO
Revenues	4,293,603	3,184,458
Infrared Products
Revenues	4,724,504	3,959,625
Specialty Products
Revenues	$ 490,865	$ 407,847

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 3: http://www.xbrl.org/2003/role/disclosureRef
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