Jia Chang Electric Insulation Industrial Co., Ltd. was established in 1984, and currently we have factories located in Shanghai, China. We have 20 years experience of manufacturing a variety of electrical insulation materials. We have been exporting our products to regions in Asia, the USA, and continental Europe for many years now. At Jia Chang we are able to produce many different electrical insulation sleeves by using materials such as fiberglass, polyester, silicon rubber, and several others insulation materials.Generally, the nominal inside diameter is between 0.5 and 30mm, and our products have breakdown voltages of between 1,000 and 10,000 volts, retaining a maximum working temperature of between 105 centigrade and 200 centigrade.With continuous research and development in product diversification, we have made our manufacturing processes systematic and professional, monitored by a strict quality control method. Furthermore, our products have already been passed and obtained UL approval in the USA, as well as gaining a sound reputation for product quality by our customers. In addition, we passed the ISO9001 quality certification in 2002. We not only focus on product development, but also place great emphasis on customer service, providing on-time production and prompt delivery, and offering competitive prices to meet customer needs. Finally, if this has stimulated your interest and you wish to know more about our company, why not contact us today. We are looking to build long term and fruitful relationships with partners from all over the world.