Our products accord with the JB/T8290_1998 flaw -detector standard, and adopt American MIL and German DIN standards. They can be widely used in the following industries: aviation. Aerospace, soldierwork, railroad, metallurgy, the automobile manu_facturing, I. C. engine, shipbuilding ect, especially used for theaccessory made of the magnetic material, such as axletree, shafts of different sizes, pole, crank, impeller, lamina, anchor man chain gear, standard pieces and valve ect, Asto the crack, pucker, loosing such surtace defects caused by the reason of raw materials or heat treatment, sealing, founding, forging and pressing, tiredness, quenching, milling and paring, our products can detect them without any loss. Welcome to contact us!