TGE has always been committed to R&D and production of metal oxide varistor, after more than 14 years of investment in infrastructure, equipment and technological innovation, TGE has independent intellectual property rights in formula of high performance of metal oxide varistor, production technology and patents, with an annual output of 2500 tons of metal oxide varistor production capacity. TGE’s three types of products including high performance metal oxide varistors, DC metal oxide varistors and high gradient metal oxide varistors have been widely used in Chinese110-1100 kV AC system and +800 DC transmission and transforming system, electrified railway, high-speed rail and rail transportation and other fields.