* Quest Technology Sdn. Bhd.
* Raya Consumable Sdn. Bhd.
* Straits Port Management Sdn. Bhd. (“SPM”)
- Megah Port Management Sdn. Bhd.
(51% owned by SPM)

Incorporated in Labuan
* Pan Management Services Ltd. (formerly known as Pan Logistics Ltd.)
* TMD Straits Ltd.
* TMD Sturgeon Ltd.

* Straits Alliance Transport Sdn. Bhd. (“SAT”)
- Straits Alliance Tech Sdn. Bhd. (formerly known as Envair Energy Sdn. Bhd.)
(100% owned by SAT)

* Tumpuan Megah Development Sdn. Bhd. (“TMD”)
- SMF (26% owned by TMD)

Incorporated in Labuan
(100% owned by TMD)

* Straits Marine Fuels & Energy Sdn. Bhd. (“SMF”)

Incorporated in Labuan

* Selatan Bunker (M) Sdn. Bhd.

Incorporated in Singapore
* Straits Marine Services Pte. Ltd.

Incorporated in Labuan
- Sierra Pioneer Marine Ltd