This machine is suitable for detecting needles/broken needles and other iron fragments hidden in various sewn products (clothing, knitwear, woolen sweater, down products, bedding, shoes, hats, gloves, plush toys, carpets, hygiene products, etc.). It can also be used for testing drugs, food, hygiene materials, clothing zippers, buttons, and non ferrous materials such as copper aluminum zinc rubber chemical industry When testing raw materials, the parts mixed with iron metal fragments are tested.