Mainly used for the thermal deformation of polymer materials (such as plastic, rubber, nylon, electrical insulation materials, etc.) and the determination of Vicat softening point temperature. The 45º double spiral automatic stirring system is used in the constant temperature medium tank. The oil tank has a special structure, which has good temperature uniformity and accuracy of ± 0.5 ° C. It also adopts advanced thyristor to control temperature. The displacement sensor has fine adjustment and fine adjustment. It has an emergency stop switch. The rear control panel is a door-type structure with a lock. The machine is easy to repair and maintain. The lifting system is an integrated model. To reduce noise. Therefore, the temperature gradient of the medium is small, the temperature is uniform, and the heating is automatically stopped when the test temperature reaches the upper limit set temperature. The test stand has an automatic lifting function, simple operation, and excellent performance-price ratio among similar models.