Hiap Seng Industries Limited, an investment holding company, engages in the provision of engineering, procurement, construction, and plant maintenance services for oil and gas, and energy sectors. The company provides building construction, process piping, pressure vessels, process equipment installation, modular compression, and tanks and terminals services for oil and gas, petrochemical and chemical, power and utilities, and pharmaceutical industries. It offers routine daily maintenance, total integrated plant maintenance, and turnaround maintenance services in the refineries, petrochemical/chemical complexes, pharmaceutical, and power/utilities plants; undertakes mechanical, E & I and civil/buildings, refractory, insulation, and blasting/painting works, as well as scaffolding services. In addition, the company engages in the provision of mechanical engineering, plant fabrication, installation, and plant maintenance services for the petroleum and petrochemical industries, as well as provision of process and industrial plant engineering, and consultancy services. It serves Singapore, the United Arab Emirates, and internationally. The company was founded in 1950 and is headquartered in Singapore.