Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Income Statement [Abstract]
Net sales	$ 11,928,864	$ 17,827,098	$ 24,673,824	$ 31,150,010
Cost of goods sold	(9,894,804)	(14,585,036)	(19,729,994)	(25,836,446)
Gross profit	2,034,060	3,242,062	4,943,830	5,313,564
Operating expenses:
Selling, general and administrative	1,208,525	1,519,593	2,578,163	2,939,566
Research and development	776,818	927,238	1,726,570	1,951,550
Total operating expenses	1,985,343	2,446,831	4,304,733	4,891,116
Income from operations	48,717	795,231	639,097	422,448
Other income (loss), net:
Interest income	130,592	173,048	282,218	354,852
Gain from the forgiveness of accounts payable and accrued liabilities	397,164	0	412,814	247,592
Loss from foreign currency transactions	(192,904)	(1,008,538)	(483,774)	(556,591)
Other income, net	119,362	124,541	245,760	312,517
Total other income (loss), net	454,214	(710,949)	457,018	358,370
Income before provision for income taxes	502,931	84,282	1,096,115	780,818
Income tax provision	36,266	167,727	78,914	215,607
Net income (loss)	466,665	(83,445)	1,017,201	565,211
Less: noncontrolling interests in net loss of subsidiary at 33.7%	(80,628)	(308,804)	(185,792)	(175,335)
Less: noncontrolling interests in net income (loss) of subsidiary at 40.0%	13,671	(3,381)	28,893	(3,381)
Net income attributable to Parent Company	$ 533,622	$ 228,740	$ 1,174,100	$ 743,927
Earnings per share attributable to Parent Company stockholders - basic	$ 0.05	$ 0.02	$ 0.10	$ 0.06
Earnings per share attributable to Parent Company stockholders - diluted	$ 0.05	$ 0.02	$ 0.10	$ 0.06
Weighted average common shares outstanding - basic	11,784,280	11,784,280	11,784,280	11,784,280
Weighted average common shares outstanding - diluted	11,816,519	11,838,850	11,810,463	11,823,672
Comprehensive income
Net income	$ 466,665	$ (83,445)	$ 1,017,201	$ 565,211
Translation adjustments	(89,174)	(264,428)	(175,934)	(136,304)
Comprehensive income	377,491	(347,873)	841,267	428,907
Less: comprehensive loss attributable to non-controlling interest	(66,957)	(312,185)	(156,899)	(178,716)
Less: foreign exchange translation attributable to non-controlling interest	(30,013)	(89,000)	(59,214)	(45,876)
Comprehensive income attributable to controlling interest	$ 474,461	$ 53,312	$ 1,057,380	$ 653,499