UMS Holdings Ltd. is an investment company, which engages in manufacturing high precision front-end semiconductor components; perform electromechanical assembly; and final testing services. It operates through the following segments: Semiconductor and Others. The Semiconductor segment provides precision machining components and equipment modules for semiconductor equipment manufacturers. The Others segment provides shipment of water disinfection systems and the supplier of base components to oil and gas original manufacturers. The company was founded by Andy Luong in 1984 and is headquartered in Singapore.