Customer Concentrations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Exports	$ 4,750	$ 25,005	$ 27,355	$ 68,660
Customer Two
Accounts Receivable	120,626	199,484	$ 120,626	$ 199,484
Sales			37.70%	40.15%
Customer One
Accounts Receivable	$ 64,554	$ 65,955	$ 64,554	$ 65,955
Sales			28.43%	28.15%