Established in year 2002, we are one of the promising suppliers of Ketos Magnetic Particle Test Ring. It provides a quick way to confirm that your DC output machine is working properly or not. Our test ring is intended to be a total system check for your DC output equipment. It consists of a ring in which a series of holes are drilled at different positions. Ketos ring acts as a quick overall system performance indicator. Holes closer to outer circumference of Ketos Magnetic Particle Test Ring simulates shallow defects while holes that are closer to center of ring simulate deep sub-surface discontinuities.