Exhibit 21.1

Subsidiaries of the Registrant

(100% owned by the Registrant except as otherwise stated)

Express Test Corporation (Dormant)	a California Corporation
Trio-Tech Reliability Services (Dormant)	a California Corporation
KTS Incorporated, dba Universal Systems (Dormant)	a California Corporation
European Electronic Test Center. Ltd.	a Cayman Islands Corporation (Operation ceased on November 1, 2005)
Trio‑Tech International Pte. Ltd., a Singapore Corporation	a Singapore Corporation
Universal (Far East) Pte. Ltd., a Singapore Corporation	a Singapore Corporation (100% owned by Trio‑Tech International Pte. Ltd., a Singapore Corporation)
Trio-Tech International (Thailand) Co., Ltd., a Thailand Corporation	a Thailand Corporation (100% owned by Trio‑Tech International Pte. Ltd., a Singapore Corporation)
Trio-Tech (Bangkok) Co., Ltd., a Thailand Corporation	(100% owned by Trio‑Tech International Pte. Ltd., a Singapore Corporation)
Trio-Tech (Malaysia) Sdn Bhd., a Malaysia Corporation	(55% owned by Trio‑Tech International Pte. Ltd., a Singapore Corporation)
Trio-Tech (Kuala Lumpur) Sdn Bhd., a Malaysia Corporation	(100% owned by Trio-Tech Malaysia)
Prestal Enterprise Sdn. Bhd., a Malaysia Corporation	(76% owned by Trio‑Tech International Pte. Ltd., a Singapore Corporation)
Trio-Tech (SIP) Co., Ltd., a China Corporation	(100% owned by Trio‑Tech International Pte. Ltd., a Singapore Corporation)
Trio-Tech (Chongqing) Co. Ltd., a China Corporation	(100% owned by Trio‑Tech International Pte. Ltd., a Singapore Corporation)
SHI International Pte. Ltd, a Singapore Corporation	(55% owned Trio‑Tech International Pte. Ltd., a Singapore Corporation)
PT SHI Indonesia, an Indonesia Corporation	(95% owned by SHI International Pte. Ltd., a Singapore Corporation)
Trio-Tech (Tianjin) Co., Ltd., a China Corporation	(100% owned by Trio-Tech International Pte. Ltd., a Singapore Corporation)
Trio-Tech (Jiangsu) Co., Ltd., a China Corporation	(51% owned by Trio-Tech (SIP) Co., Ltd, a China Corporation)