Dyna-Mac Holdings Ltd. is a Singapore-based investment holding company. The Company is engaged in the engineering, fabrication and construction of offshore floating production storage offloading (FPSO) and floating storage offloading (FSO) topside modules, as well as onshore plants and other sub-sea products for the oil and gas industries. It operates through two segments: Module business and Ad-hoc projects. Its module business segment involves detailed engineering, procurement and construction of topside modules for FPSOs and floating liquefied natural gas (LNG). Its specialized offshore business involves Hull of Semi-submersible, Turret Mooring Systems, Sub-sea Pipeline, and Fixed Platform and Jacket. Its on-shore plant business consists of construction of modules for LNG Liquefaction Plant, Refineries, Pharmaceutical and Petrochemical Plants. Its subsidiaries include Dyna-Mac Engineering Services Pte. Ltd. and Dyna-Mac Engineering (HK) Pte. Ltd.