Vickers method is based on an optical measurement system, it specifies a range of light loads using a diamond indenter to make an indentation which is measured and converted to a hardness value. It is very useful for testing on a wide type of materials, but test samples must be polished to enable measuring the size of the impressions. A square base pyramid shaped diamond is used for testing in the Vickers scale. Typically loads are very light, ranging from 5gf to 2Kgf, although "Macro" Vickers loads can range up to 50 Kg or more. Micro Vickers hardness methods are used to test on metals, ceramics, and composites - almost any type of material. Since the test indentation is very small in a Vickers test, it is useful for a variety of applications: testing very thin materials like foils or measuring the surface of a part, small parts or small areas, measuring individual microstructures, or measuring the depth of case hardening by sectioning a part and making a series of indentations to describe a profile of the

SU-300H Manual Ultrasonic Hardness Tester is a classical portable durometer made by Sinowon group. It applies method of ultrasonic contact independence to make hardness testing at the spot or in the laboratory. SU-300H is a NDT durometer due to the contact indention is too small to observe, it is one of the excellent solution to test hardness of finished products, such as, the mold, gear, shaft, rod, screw, rails, etc. SU-300H can not only work with the manual probes, but also work with the motorized probes, which is able to meet the different application in light of different condition of surface roughness. SU-300H conforms the standard ASTM A1038-2005, DIN standard DIN50159-1-2008 and China National standard GB/T 34205-2017.

High-temperature aging test chambers (also known as high-temperature ovens, drying cabinets, and ovens) are widely used in factories, scientific research, and enterprises and institutions, mainly for baking, drying, and other heating effects on various items, such as drying transformer cores into wire cores, drying motor stators or rotor windings, preheating welding electrodes before welding, drying foundry sand molds, drying painted electrical cabinets and parts, and so on.

The ventilated aging test chamber is suitable for thermal resistance testing of electrical insulating materials, as well as for ventilated aging testing of electronic components and plasticized products.