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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Jun. 30, 2020
Accounting Policies [Abstract] |
Subsidiaries |
| Ownership |  | Location
Express Test Corporation (Dormant) | 100% |  | Van Nuys, California
Trio-Tech Reliability Services (Dormant) | 100% |  | Van Nuys, California
KTS Incorporated, dba Universal Systems (Dormant) | 100% |  | Van Nuys, California
European Electronic Test Centre (Dormant) | 100% |  | Dublin, Ireland
Trio-Tech International Pte. Ltd. | 100% |  | Singapore
Universal (Far East) Pte. Ltd. * | 100% |  | Singapore
Trio-Tech International (Thailand) Co. Ltd. * | 100% |  | Bangkok, Thailand
Trio-Tech (Bangkok) Co. Ltd.* | 100% |  | Bangkok, Thailand
Trio-Tech (Malaysia) Sdn. Bhd. (55% owned by Trio-Tech International Pte. Ltd.) | 55% |  | Penang and Selangor, Malaysia
Trio-Tech (Kuala Lumpur) Sdn. Bhd. (100% owned by Trio-Tech Malaysia Sdn. Bhd.) | 55% |  | Selangor, Malaysia
Prestal Enterprise Sdn. Bhd. (76% owned by Trio-Tech International Pte. Ltd.) | 76% |  | Selangor, Malaysia
Trio-Tech (SIP) Co., Ltd. * | 100% |  | Suzhou, China
Trio-Tech (Chongqing) Co. Ltd. * | 100% |  | Chongqing, China
SHI International Pte. Ltd. (Dormant) (55% owned by Trio-Tech International Pte. Ltd) | 55% |  | Singapore
PT SHI Indonesia (Dormant) (100% owned by SHI International Pte. Ltd.) | 55% |  | Batam, Indonesia
Trio-Tech (Tianjin) Co., Ltd. * | 100% |  | Tianjin, China

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