Mar 27, 2007. /Lesprom Network/. Rottneros will raise the price for longfibre NBSK pulp from April 1 2007 to $780 per tonne. The new price is valid until further notice. Rottneros is one of the world’s leading independent producers of market pulp. With approximately 750 employees, the group has a turnover of approximately SEK 2.7 billion