Woei Harng Loo

Koon Holdings Ltd. is an investment company, which engages in the provision of infrastructure and civil engineering services. It operates through the following segments: Construction, Precast, and Property. The Construction segment focuses on the construction projects for civil engineering and infrastructure construction works including land reclamation, roads and bridges, shore protection, terminal, and port projects. The Precast segment includes manufacturing and supplying reinforced concrete piles and precast components. The Property segment is involved in property development activities. The company was founded in 1975 and is headquartered in Singapore.

SSH Corp. Ltd. supplies industrial materials including pipes, fittings and valves, welding equipment and consumables. The firm also engages in providing engineering, property development and e-commerce platform maintenance services, operating technical training center, general warehousing and services allied to transporting of goods. The company was founded in 1942 by Chop Sin Soon Huat and is headquartered in Singapore.

Aqua-Terra Supply Co. Ltd. operates as an investment holding company with interest in manufacturing and trading marine-related products. Its Other activities include trading spare parts and providing ship-handling services to vessels, testing and certification for related marine, offshore and construction products. The company was founded in October 1972 and is headquartered in Singapore.

Part of AT & S Pte Ltd., Orient Marine Pte Ltd. is a Singaporean company that provides logistics services and distributes marine engine spare parts. The company is based in Singapore, Singapore. Orient Marine was acquired by Aqua-Terra Supply Co. Ltd. from STH Logistics Pte Ltd. on May 03, 2005 for $1.87 million.

Part of AT&S Pte Ltd., Indo Synergy Pte Ltd. is an investment holding vehicle of Sin Soon Huat Ltd. The company is based in Singapore, Singapore.

KS Flow Control Pte Ltd. operates an investment holding company with an interest in oil rig construction. The company was founded in 2006 and is headquartered in Singapore.

Raymonds Supply Co., Ltd. operates as an oil field supply company serving the oil companies. The firm offers industrial supplies, electrical and network components, safety and environmental products, valves and actuators and other products. The company was founded in 1986 and is headquartered in Hong Kong.

Part of AT & S Pte Ltd., Oceanic Offshore Engineering Pte Ltd. is a Singaporean company that provides wire ropes check and related services. The company is based in Singapore, Singapore.

Part of AT & S Pte Ltd., Aqua-Terra Logistics Pte Ltd. is a Singaporean company that provides logistic services. The company is based in Singapore, Singapore.