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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Segment information) - USD ($)
 3 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Items:    
Net sales $ 12,744,960 $ 13,322,912
Cost of goods sold (9,835,190) (11,251,410)
Selling, general, and administrative expenses (1,369,638) (1,419,973)
Research and development expenses (949,752) (1,024,312)
Net loss 550,536 648,656
Operating Segments [Member]    
Items:    
Net sales 12,744,960 13,322,912
Cost of goods sold (9,835,190) (11,251,410)
Selling, general, and administrative expenses (1,369,638) (1,419,973)
Research and development expenses (949,752) (1,024,312)
Other segment items (39,844) 1,021,439
Net loss $ 550,536 $ 648,656