leasing and rental of information processing equipment, medical appliances, physicochemical appliances, and medical equipment and furniture; software engineering for the design of production management systems and equipment control systems; developing and designing CAD/CAE, financial estimate and engineering control systems for others; integrating software systems; designing buildings, office complexes, factories, hotels, hospitals, research laboratories, leisure facilities and other premises for public and private sector customers; plant system engineering; and design of material handling systems