Accrued expense (Details) - USD ($)	Jun. 30, 2019	Jun. 30, 2018
Accrued expenses [Abstract]
Employee-related Liabilities, Current		$ 424,871
Interest Payable, Current	$ 112,389	112,389
Customer Deposits, Current		61,494
Product Warranty Accrual, Current		32,078
Sales and Excise Tax Payable		104,539
Accrued Rent		49,458
Other Accrued Liabilities, Current		59,795
Accrued Liabilities, Current	$ 656,707	$ 762,032