AEM Holdings Ltd is a Singapore-based investment holding company. The group is engaged in designing and manufacturing semiconductor manufacturing equipment and related tooling parts, and precision machining of components. The operating segments of the group are Test Cell Solutions (TCS), Instrumentation (INS), Contract Manufacturing (CM), and Others. The group generates the majority of the revenue from the TCS segment. The Test Systems solutions segment provides customized system solutions involving high-speed motion and mechanical design to both mass-volume manufacturers and technology development laboratories. The group operates in Singapore, Malaysia, China, the USA, Vietnam, Finland, and Other countries.