Yau Lee Holdings Limited is an investment holding company. The Company, through its subsidiaries, is engaged in contracting of building construction, plumbing, renovation, maintenance and fitting-out projects, building materials trading, and property investment and development. In addition, the Company is engaged in other activities, which primarily include computer software development, and architectural and engineering services. It operates in four segments: Construction, which involves contracting of building construction, plumbing, renovation, maintenance and fitting-out projects; Electrical and mechanical installation, which is engaged in provision of electrical, mechanical, ventilation and air conditioning, fire, plumbing and environmental engineering services; Building materials trading, which is engaged in trading of construction and building materials, and Property investment and development.