Filter rod (bar) is widely used in ceramics, electric power, mining industry, plastics, chemicals, rubber, pharmaceutical, food, environmental protection, and pigment, and dyestuff, electronic, metallurgy industry to clean up powdery, granular or liquid materials in the ferromagnetic impurities. Magnetic filter rod (bar) is the use of high-quality stainless steel tube and high b value for the alloy of rare earth NdFeB material, after the production of special production process produced, the combination of fixed, when through a containing iron material by magnetic wand to attract, containing iron material is completely adsorbed on the tube wall, in order to achieve except for the purpose of iron, ensure the equipment in good condition and product safety.