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Consolidated Statements of Comprehensive Income (Loss) - USD ($)
 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Income Statement [Abstract]    
Net sales $ 48,565,524 $ 59,804,694
Cost of goods sold 39,347,065 49,879,514
Gross profit 9,218,459 9,925,180
Operating expenses:    
Selling, general, and administrative 4,898,956 4,815,725
Research and development 3,445,124 2,990,496
Total operating expenses 8,344,080 7,806,221
Income from operations 874,379 2,118,959
Other income, net:    
Interest income 9,650 10,301
Income from governmental subsidy 281,570 0
Other (loss) income, net (19,845) 81,867
Total other income, net 271,375 92,168
Income before provision for income taxes 1,145,754 2,211,127
Income tax provision 374,587 34,933
Net income 771,167 2,176,194
Non-controlling interests in net loss (income) of subsidiary 48.2% 102,793 (565,223)
Net income attributable to Parent Company $ 873,960 $ 1,610,971
Basic earnings per share attributable to Parent Company stockholders $ .08 $ .15
Diluted earnings per share attributable to Parent Company stockholders $ .08 $ .15
Weighted average common shares outstanding - basic 10,501,730 10,414,755
Weighted average common shares outstanding - diluted 10,660,900 10,653,897
Comprehensive income (loss)    
Net income $ 771,167 $ 2,176,194
Translation adjustments 34,322 16,595
Comprehensive income 805,489 2,192,789
Comprehensive loss (income) attributable to non-controlling interest 102,793 (565,223)
Comprehensive income attributable to controlling interest $ 908,282 $ 1,627,566