Boustead Heavy Industries Corp Bhd is an investment holding company. The company's operating segment includes Defence and Security, Commercial, and others. It generates maximum revenue from the Defence and Security segment. The Defence and Security segment is principally engaged in shipbuilding and maintenance, repair, and overhaul (MRO) of the Royal Malaysian Navy's patrol vessels. In addition, the company is also involved in the manufacturing, supply, and maintenance of defense-related electronic products.