Progen Holdings Ltd, an investment holding company, engages in the design, supply, installation, and maintenance of air-conditioning and mechanical ventilation systems primarily in Singapore. It operates through four segments: Products and Installation, Servicing and Maintenance, Rental, and Property Development. The company is also involved in the trading and contracting of engineering works, cooling towers, air-conditioning, and mechanical ventilation systems; service and repair of air-conditioners, cooling towers, and other cooling equipment; and supply and installation of cooling fans, cooling towers, and air-conditioners. In addition, it engages in the sale and distribution of household electrical appliances and air-conditioners; leasing of leasehold buildings and office spaces; and development and sale of residential properties. The company was founded in 1981 and is based in Singapore.