In 1818 Tervakoski (telva high) Company in northern Europe and Finland founded, environmental protection and the quality of leadership is the company's core values; more than 40 years ago Tervakoski insulation products to China and service in high voltage cable and ultra high voltage transformer industry; today we cooperate with Nantong on Chicago Electric Power Material Co., Ltd. was established in Nantong telva high insulation material Co., Ltd., attention to 35kV and below distribution transformer A-class --- C grade insulation material production and insulation system solutions. Tervakoski telva nearly 200 years of precipitation quality and over 60 countries and regions in the world of sales and service network to help the global power industry ahead!