Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net sales	$ 8,966,140	$ 6,565,442	$ 31,480,832	$ 22,562,054
Cost of goods sold	7,371,035	5,121,593	26,431,444	18,279,140
Gross profit	1,595,105	1,443,849	5,049,388	4,282,914
Operating expenses:
Selling, general, and administrative	1,268,674	1,124,113	3,849,296	3,202,455
Research and development	714,092	744,794	2,186,755	2,641,526
Total operating expenses	1,982,766	1,868,907	6,036,051	5,843,981
Loss from operations	(387,661)	(425,058)	(986,663)	(1,561,067)
Other income (loss), net:
Interest income	48,921	2,479	82,673	7,513
Income from governmental subsidy	0	55,261	64,824	150,485
Other income (loss), net	2,984	(3,838)	(3,322)	(59,720)
Total other income (loss), net	51,905	53,902	144,175	98,278
Loss before provision for income taxes	(335,756)	(371,156)	(842,488)	(1,462,789)
Income tax benefit	(108,244)	(182,175)	(185,284)	(83,055)
Net loss	(227,512)	(188,981)	(657,204)	(1,379,734)
Non-controlling interests in net loss of subsidiary at 48.2%	0	48,259	55,564	70,710
Non-controlling interests in net loss of subsidiary at 35.8%	69,698	0	107,181	0
Net loss attributable to Parent Company	$ (157,814)	$ (140,722)	$ (494,459)	$ (1,309,024)
Basic loss per share attributable to Parent Company stockholders	$ (0.01)	$ (0.01)	$ (0.05)	$ (0.12)
Diluted loss per share attributable to Parent Company stockholders	$ (0.01)	$ (0.01)	$ (0.05)	$ (0.12)
Weighted average common shares outstanding - basic	10,570,203	10,570,203	10,570,203	10,570,203
Weighted average common shares outstanding - diluted	10,570,203	10,570,203	10,570,203	10,570,203
Comprehensive income
Net loss	$ (227,512)	$ (188,981)	$ (657,204)	$ (1,379,734)
Translation adjustments	(4,351)	(4,567)	(7,650)	73,616
Comprehensive loss	(231,863)	(193,548)	(664,854)	(1,306,118)
Comprehensive loss attributable to non-controlling interest	69,698	48,259	162,745	70,710
Comprehensive loss attributable to controlling interest	$ (162,165)	$ (145,289)	$ (502,109)	$ (1,235,408)