Zhengzhou SuTong Electric Equipment Company is an integrated group corporation of scientific research , production and sales.It owns several production bases of experimental furnaces(muffle furnaces),industrial furnaces, automatic control，mining machinery and electrical equipments, power equipments and so forth, which respectively produce 5 general types of productions with more than 30 kinds of specifications. Among the catalogue,over 10 kinds of muffle furnace products such as the chamber type furnace,tube furnace, controlled atmosphere,rotating and lifting,which using digital tempreture controllers are deeply welcomed by domestic and overseas clients.80% of the products are sold to Europe , the United States,Southeast Asia, the Middle East and more than 30 neighboring countries.