Koh Brothers Eco Engineering Limited, an investment holding company, provides engineering, procurement, and construction services for infrastructure, water and wastewater treatment, building, bio-refinery, and renewable energy projects in Singapore, Malaysia, rest of Asia, Indonesia, Africa, and internationally. The company operates in two segments, Engineering and Construction, and Bio-Refinery and Renewable Energy. It undertakes various civil engineering and construction projects. The company also offers water and wastewater treatment solutions, such as engineering, manufacturing, and procurement services for infrastructure, specialist equipment, and turnkey systems, as well as project management, installation, performance trial, commissioning, training, and operation and maintenance services. In addition, it designs, builds, and installs hydro-engineering equipment and systems; and acts as a system integrator for the mechanical and electrical power, as well as instrumentation and control systems. Further, the company offers refining solutions, such as edible and non-edible oil refining plants, renewable energy and biofuel plants, and system and process improvements for the existing refining operations; consultancy, design, engineering, procurement, and construction services for palm oil mills that are seeking to recover and utilize methane as a source of renewable energy for power generation; and palm oil mill effluent (POME) biogas and methane recovery systems; as well as distributes machinery and components; and assists in designing, reviewing, submitting, and supporting POME biogas recovery projects. The company was formerly known as Metax Engineering Corporation Limited and changed its name to Koh Brothers Eco Engineering Limited in April 2014. The company was incorporated in 1975 and is based in Singapore. Koh Brothers Eco Engineering Limited is a subsidiary of Koh Brothers Group Limited.