Altri, SGPS, S.A. produces and sells cellulosic fibers in Portugal and internationally. The company produces pulp products for various applications, including printing and writing papers and for the textile industry. It is also involved in the timber and biomass commercialization; forest management; and real estate businesses, as well as production of plants in nurseries and provision of services related with forests and landscapes. The company was incorporated in 2005 and is headquartered in Porto, Portugal.