Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net sales	$ 184,115,345	$ 75,072,298
Cost of goods sold	151,651,324	60,547,813
Gross profit	32,464,021	14,524,485
Operating expenses:
Selling, general, and administrative	5,077,848	3,699,859
Research and development	4,567,863	3,746,502
Total operating expenses	9,645,711	7,446,361
Income from operations	22,818,310	7,078,124
Other income, net:
Interest income	8,789	159,749
Income from governmental subsidy	147,166	16,282
Gain from the forgiveness of payroll protection plan loan	487,300	0
Other income (expense), net	(26,088)	44,733
Total other income, net	617,167	220,764
Income before provision for income taxes	23,435,477	7,298,888
Income tax provision	5,039,295	1,380,301
Net income	18,396,182	5,918,587
Less: non-controlling interests in net income of subsidiary at 35.8%	0	189,105
Less non-controlling interests in net income of subsidiary at 33.7%	697,147	178,864
Net income attributable to Parent Company	$ 17,699,035	$ 5,550,618
Basic earnings per share attributable to Parent Company stockholders	$ 1.56	$ 0.52
Diluted earnings per share attributable to Parent Company stockholders	$ 1.53	$ 0.52
Weighted average common shares outstanding - basic	11,350,946	10,581,499
Weighted average common shares outstanding - diluted	11,592,901	10,715,979
Comprehensive income
Net income	$ 18,396,182	$ 5,918,587
Translation adjustments	177,924	(15,624)
Comprehensive income	18,574,106	5,902,963
Less: comprehensive income attributable to non-controlling interest	697,147	367,969
Comprehensive income attributable to controlling interest	$ 17,876,959	$ 5,534,994