The temperature can be adjusted by PLC programmable controller using computer display operation. This product is easy to operate, convenient to use, stable in performance, and high in accuracy. During the test, the test temperature and deformation can be monitored in real time. At the end of the test, the system automatically stops heating and can print test reports and test curves. This series of models is an indispensable instrument for self-inspection by quality inspection units, colleges and universities.