TERVAKOSKI is proud to be the World's leading manufacturer of electrical insulating paper. Offering the most comprehensive range of standard and tailor-made insulating papers for the cable and transformer industry, Tervakoski's electrical insulating paper is of the highest quality and free of impurities. It can be used in the most demanding extra high voltage applications and is guaranteed due to the use of purified deionised water and special pulp in its manufacturing process. Years of experience have enhanced our performance by understanding the needs of our business, our industry and our customers.