The Ultra-High Temperature Chambers are available in two types. One type covers the temperature range up to +500 which is used, for example, to perform high temperature life tests and heat resistance tests. The other type covers a wider temperature range up to +700 which is, for example, used for baking ceramics, and for heat resistance tests of highly functional glass and high polymer materials. In the latter type, ceramic fiber and aluminum foil are used as heat insulators. Of course, maximum safety is assured by various safety devices and our other innovative systems.