Revenues (Tables)

3 Months Ended

Sep. 30, 2021

Revenues

Schedule of Revenue from external customers by geographic areas

	Sales by Region
	Three months ended
	September 30,
	2021		2020
Domestic United States	$	5,871,336	$	6,103,489
Europe		72,061		1,368,561
Canada		155,790		367,941
Latin America		456,923		1,163,268
Middle East		136,385		506,726
Far East		665,098		678,597
Other International		—		966
	$	7,357,593	$	10,189,548

Schedule of Revenue from external customers by products and services

	Sales by Product
	Three months ended
	September 30,
	2021		2020
Respiratory care products	$	1,883,711	$	2,148,339
Medical gas equipment		3,708,538		3,958,521
Emergency medical products		1,765,344		4,082,688
	$	7,357,593	$	10,189,548