Underground Insulations  Manufacturers, Traders, Suppliers

As one of Switzerland’s longest-established industrial companies, Von Roll focuses on products and systems for electrical power generation, power transmission and industrial applications. Von Roll’s business portfolio is divided into the following businesses:
Von Roll Insulation offers electrical insulation products, systems and services for generators, high- and low-voltage motors, transformers and other applications.
Von Roll Composites produces composite materials and parts for a variety of industrial equipment.

State-of-the-art production methods – innovative products – international production facilities – global customer relationshipsISOVOLTA Group is a leading international manufacturer of electrical insulating materials, technical laminates and composites and maintains a global presence.
16 production and sales locations in 11 countries on three continents rely on many years of experience in the synthesis and transformation of raw materials into highly reliable, intelligent materials. Material and technology know-how, flexibility and an excitement about innovation define product development and shape the cooperative customer relationships.

Zisun Technology is a steadily growing platform-oriented company with future development driven by “team” and “innovation”.Founded in 2007, Zisun is a national high-tech enterprise with a national enterprise technology center. On January 22, 2015, Zisun was listed on Shanghai Stock Exchange with stock code 603601. Zisun is always committed to the field of air purification and high efficiency energy-saving. In terms of air purification, Zisun is the only professional company in the world that can manufacture three main air filter materials with internationally top quality and scale at the same time, namely: high performance glass fiber filter, low resistance melt blown filter and high-efficiency PTFE membranes. In terms of high efficiency energy-saving, equipped with aerospace grade sound insulation technology and independent intellectual property rights, Zisun focus on the materials of new energy and aerospace insulation that can be widely used in commercial aircraft, high-speed rail, ship, green car and other fields.