Stora Enso (Stora Enso) is a world-renowned paper products manufacturer headquartered in Finland, formerly known as the historic large copper mine in Falun, Sweden, so the company is sometimes referred to as the world's oldest company still in operation. The current Stora Enso company was formed by the merger of Stora and Enso in 1998, mainly producing biomaterials, printing paper, renewable packaging paper and so on.