Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Net sales	$ 8,870,275	$ 13,328,936
Cost of goods sold	6,849,763	11,155,717
Gross profit	2,020,512	2,173,219
Operating expenses:
Selling, general, and administrative	848,761	1,304,019
Research and development	895,512	757,216
Total operating expenses	1,744,273	2,061,235
Income from operations	276,239	111,984
Other income (loss), net:
Interest income	55,030	3,052
Income from governmental subsidy	4,093	64,188
Other income (loss), net	15,592	(14,084)
Total other income (loss), net	74,715	53,156
Income before provision for income taxes	350,954	165,140
Income tax provision	60,974	41,970
Net income	289,980	123,170
Non-controlling interests in net loss of subsidiary	(36,042)	55,564
Net income attributable to Parent Company	$ 253,938	$ 178,734
Basic earnings per share attributable to Parent Company stockholders	$ 0.02	$ 0.02
Diluted earnings per share attributable to Parent Company stockholders	$ 0.02	$ 0.02
Weighted average common shares outstanding - basic	10,570,203	10,570,203
Weighted average common shares outstanding - diluted	10,705,500	10,682,166
Comprehensive income
Net income	$ 289,980	$ 123,170
Translation adjustments	(18,317)	(13,843)
Comprehensive income	271,663	109,327
Comprehensive (income) loss attributable to non-controlling interest	(36,042)	55,564
Comprehensive income attributable to controlling interest	$ 235,621	$ 164,891