Stock Video - At Vallvik´s Bruk, Sweden, long-fibrile chemical sulfate masses that account for about 56 percent of the group´s production are produced. In 2020, 232, 700 tons of mass were produced at the mill. The sulfate process used is not only the most common process for producing chemical mass but the method also produces a stronger mass. As much as 99 of the fuel used in the mill today is fossil-free and 97 per cent of all chemicals are recovered. VALLVIK USE IS LOCATED IN HEALTH COUNTRY. The practice dates from 1908 and here work about 180 people. 97 percent of the chemicals used are recycled. 83 percent of electricity is made in the mill and 99 percent of the energy is fossil-free.