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Document And Entity Information
 6 Months Ended
Jun. 30, 2025
Document Information [Line Items]  
Document Type S-3
Entity Registrant Name TRIO-TECH INTERNATIONAL
Entity Incorporation, State or Country Code CA
Entity Tax Identification Number 95-2086631
Entity Address, Address Line One Block 1008
Entity Address, City or Town Toa Payoh North
Entity Address, Postal Zip Code 318996
City Area Code 65
Local Phone Number 6265 3300
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company false
Entity Central Index Key 0000732026
Amendment Flag false