This series of products consists of a viscometer and a dedicated temperature controlled heater, used to measure the dissolved hot melt adhesive, asphalt, paraffin, high polymer, etc. after heating, and can directly display measurement data. The DV-2H series products can display shear rate and shear stress. Some products can be equipped with “Data Collection, Analysis, and Plotting Software” to collect, analyze, and display viscosity temperature curves throughout the process. The product’s metrological performance has reached the international advanced level.