This testing machine applies to testing the Vicat softening point and thermal deformation temperature of polymer materials,using as an index of controlling quality and identifying thermal property of new species,measuring deformation by computer,LED or dial indicator and setting the rate of temperature increase by temperature controller with the characters of easy operation,modern design,elegant appearance and high reliability,in conformity of GB/T 1633 Test of Thermoplastic Plastics Softening Temperature(VST),GB/T 1634 Test Method for Plastic Bending Load Thermal Deformation Temperature and GB 8802 Test Method for Vicat Softening Temperature of Rigid Polyvinyl Chloride(PVC-U)tubular product and Pipe fittings as well as the standards of ISO75,ISO306 and ISO2507,etc.