Lap Kei Engineering (Holdings) Limited is a Hong Kong-based investment holding company principally engaged in the engineering of building services systems and related businesses. The Company operates through two segments. Building Services Engineering Work segment is engaged in the provision of engineering works of building services systems, including engineering works related to ventilation and air-conditioning systems, electrical systems, plumbing and drainage systems, fire systems and others. Maintenance, Repair and Other Services segment is engaged in the provision of maintenance and repair services for building services systems and the replacement of parts. The Company mainly operates businesses in Hong Kong.