is a Portuguese
headquartered in Porto
. The group's main companies operate in wood pulp
production, cultivation of forests
for the timber
and paper industry
and co-generation of energy
, including energy production from renewable resources. The group also operates in the market of steel
works such as cold rolled steel sheets and strips, machinery, tools and other related products.
Altri's holding company is Altri SGPS, SA., which is listed on the Euronext Lisbon stock exchange. Major subsidiaries are Celulose do Caima (paper industry), Celbi (paper industry), and F. Ramada (steel and storage systems). Altri was born from a spin-off of the industrial assets of Cofina group in the early 2000s.