Taxes (Details 1) - USD ($)	Dec. 31, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Deferred tax assets:
Allowance for doubtful accounts	$ 322,480	$ 197,962
Inventory reserve	269,192	228,893
Net operating loss carry-forwards	512,124	519,671
Total	1,103,796	946,526
Valuation allowance	(512,124)	(519,671)	$ (519,671)	$ (539,061)
Total deferred tax assets	591,672	426,855
Deferred tax liability:
Distribution rights	(264,782)	(268,684)
Total deferred tax liability	(264,782)	(268,684)
Deferred tax assets, net	$ 326,890	$ 158,171