Progen Holdings Limited is an investment holding company. The Company is engaged in designing, supplying, installation and maintenance of air-conditioning and mechanical ventilation systems. Its segments include products and installation, services and maintenance, and rental. The products and installation segment relates to trading and contracting of engineering works, cooling towers, air-conditioning and mechanical ventilation systems. The services and maintenance segment relates to servicing and repairing of air-conditioners, cooling towers and other cooling equipment. The rental segment relates to the leasing of factory and office space. The Company, through its subsidiaries, is also engaged in installation and maintenance of air-conditioning systems (Malaysia), and supplying and installation of cooling fans, cooling towers and air-conditioners. Its subsidiaries include Progen Pte Ltd, D.B. Progen Servicing Pte Ltd, Polacel Manufacturing (S.E. Asia) Pte Ltd and Engpro Sdn Bhd.