Po Kwan Wong

Ryobi Kiso Holdings Ltd. engages in the provision of ground engineering solutions. It operates through the following segments: Bored Piling, Eco-Friendly Piling, Geoservices and Others, and Property Investment. The Bored Piling segment involved in piling work to carry heavy vertical loads from structures and horizontal loads in earth retaining structures for deep excavation. The Eco-Friendly Piling, Geoservices and Others segment comprises of eco-friendly piling works, environmental protection engineering, micro-piling, ground anchoring, slope protection and stabilization works, strutting systems, sheet pile and civil engineering works. The Property Investment segment invests, trades, and develops residential, commercial, and industrial properties. The company was founded on February 28, 2008 and was headquartered in Singapore.

Part of Ryobi Kiso Holdings Ltd., Ryobi Kiso (S) Pte Ltd. is a Singaporean company that provides construction site preparation services. The company is based in Singapore, Singapore. The company was founded by Tiong Siew Ong.

Sembcorp Design & Construction Pte Ltd. engages in the provision of design and build construction services. It offers consultancy, civil and structural engineering, and modular construction. The company was founded in 1982 and is headquartered in Singapore.

Raffles Piling Vietnam Co. Ltd. engages in the provision of construction services. The company was founded on July 29, 2009 and is headquartered in Ho Chi Minh City, Vietnam.

Wai Fong Holdings Ltd. engages in the provision of infrastructure civil engineering and general building services. It operates through the following segments: Construction Services, Infrastructure Civil Engineering Projects, General Building Works, and Project Management Services. The Construction Services segment operates as RC subcontractor for bridges and rails. The Infrastructure Civil Engineering Projects segment includes mass rapid transit, road, tunnel, and drainage works. The General Building Works segment consists of rebar, formwork erection, and concrete works. The Project Management Services segment provides project arrangements with joint venture partners. The company was founded by Seong Choy Chai in 1993 and is headquartered in Singapore.