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  • Located in Jiangsu province, China, Changzhou Magnetic Device Factory (Changzhou Magnetic Co., Ltd) is dedicated to production of permanent magnets and magnetic assemblies since its foundation in 1990. Recently, its production targets are permanent ferromagnet and rare earth magnet products. Our company occupies area of 12000 m2, covering factory...
  • About Us
  • Over past years, we have accumulated large amount of experience on technology and production. Besides, we bring in many special equipments and manufacturing techniques. Our original products are tape heads, but now, advanced and comprehensive products provided by us are widely used in various devices, such as relay, magnetic sensor, microwave device and other magnetic devices...
  • Permanent Magnets
  • Permanent magnets are objects made from magnetic materials. They can create their own persistent magnetic fields and be strongly attached to ferromagnetic substances like iron, nickel, cobalt, etc. Magnets with permanent fields are either naturally occurring products or artificially produced in labs...
  • Neodymium Magnets
  • Neodymium magnet is mainly made from the alloy of neodymium, iron and boron. It is a kind of rare earth magnet which is most widely used. In Nd2Fe14B tetragonal crystalline structure, it is also called NdFeB magnet or NIB magnet. It is the strongest type of permanent magnet made so far, so neo magnet is known as the king of magnets ...
  • Sintered Neodymium Magnet
  • As lanthanide series of elements in the periodic table, sintered neodymium magnets (sintered NdFeB magnets or sintered NIB magnets) are also known as rare earth magnets. Featured by outstanding magnetic properties, they are the most powerful magnets used today. Although...
  • Bonded Neodymium Magnet
  • Bonded NdFeB magnets are manufactured with melt spinning of a thin ribbon of NdFeB alloy. This ribbon contains randomly oriented Nd2Fe14B nano-scale grains. Then, the ribbon is pulverized into particles and mixed with a polymer. At last, it is compressed into bonded neodymium magnets...
  • Ferrite Magnets
  • 1. Ferrite magnets are ceramic compounds of iron oxides, such as hematite (Fe2O3) or magnetite (Fe3O4), and other metal oxides.
    2. Ceramic magnets are hard and brittle. According to magnetic properties, they can be classified into “soft” ones and “hard” ones. “Soft” magnets have small coercive force...
  • SmCo Magnets
  • 1. Samarium cobalt magnets, or SmCo magnets, are made from samarium, cobalt and other rare earth materials. According to different components, its molecular formula is SmCo5 or Sr2Co17.
    2. As rare earth magnets, they were developed in the early 1970s. They are similarly in strength to neodymium magnets, but have larger temperature ratings...
  • Custom Magnets
  • Apart from magnets in shapes of square, cylinder, disk and sphere, we also provide micro-magnets and custom magnets in other shapes according to customers’ need. Main magnet products sold by us are neodymium magnets and ferrite magnets. NIB magnets are featured...
  • Disc Magnets
  • According to different shapes, our products are square magnets, disc magnets, cylinder magnets, etc. These magnet products are either neodymium magnets or ferrite magnets. Besides, we also manufacture custom magnets in various shapes required by customers...
  • Square Magnets
  • Square magnets manufactured by us are mainly neodymium magnets and ferrite magnets. We also produce cylinder magnets, disc magnets, sphere magnets, etc. Besides, custom magnets are manufactured according to special applications...
  • Ceramic Magnet
  • Ceramic magnets are composed of strontium carbonate and iron oxide. They are most commonly employed in electronic industry, IT industry, automobile industry, etc. They are also called ferrite magnets, which are featured by rigidity and brittleness...
  • Magnetic Materials
  • Magnetic objects are magnetized materials or materials which can create their own magnetic fields. There are two kinds of magnetic materials: paramagnetic materials and ferromagnetic materials. A phenomenon that magnetic field makes two objects attract to...
  • Rare Earth Magnets
  • Made from alloys of rare earth elements, rare earth magnets are featured by strong permanent magnetism. They produce significantly stronger magnetic fields than other types such as ferrite or alnico magnets. According to chemical composition, they are either neodymium magnets...
  • Application
  • Changzhou Magnetic Device Factory can manufacture neodymium magnets and ferrite magnets which are in complex structure and in small size on the basis of special applications. With complete specialized facilities, these magnets are accurately processed...
  • Neodymium Magnet Application
  • Neodymium magnet is also called NdFeB magnet because it is in Nd2Fe14B tetragonal crystalline structure. According to processing procedures, it is either sintered NdFeB magnet or bonded NdFeB magnet. NdFeB magnet is the strongest type of permanent magnet made...
  • Speaker Neodymium Magnet
  • Speaker magnets are important components in loudspeakers. They can be divided into soft material magnets and hard material magnets. As hard magnets, NdFeB magnets for speakers are expensive, but they have much better performance than common magnets...
  • Relay Neodymium Magnet
  • Relay sintered neodymium magnets are made from the alloy of neodymium, iron, boron and various rare elements (Dy, Al, Nb, Ga, Mo, Co, etc.) in high-heat inert gases environment or in high-heat vacuum condition. As NdFeB magnets for relay, it is widely used in mobile phones...
  • Switch Neodymium Magnet
  • Generally, switch neodymium magnets must be machined with diamond-grinding techniques. Sometimes, machining operations may be performed on switch magnet materials with carbide tools, but surface finishes for NdFeB magnet switch are not good enough...
  • Sensor Neodymium Magnet
  • Sensor neodymium magnets are commonly used in transducers. In modern industry and electronics, sensor magnet helps magnetic transducer to sense magnetic field strength and measure physical parameters like current, position, motion, direction...
  • Packaging Neodymium Magnet
  • Neodymium magnets for packaging are widely used in gift box closure, bottle cap sealing, mobile phone case, etc. Our packaging neodymium magnets have passed various certifications...
  • Mobile Neodymium Magnet
  • Neodymium magnets for mobile phones produced by us are in various shapes, such as square, disc, cylinder, arch, ring, etc. Besides, we offer custom mobile magnets according to different requirements from customers. Apart from magnet shapes...
  • Toy Neodymium Magnet
  • 1. With magnetic energy product 10 times larger than ferrites, magnets in toys are featured by great magnetic performance. Majority of toy magnets are neodymium magnets...
  • Motor Neodymium Magnet
  • We can manufacture motor neodymium magnets which are in various shapes, such as disc, cylinder, ring, square, arch, etc. Besides, custom magnets, including NdFeB magnets used in motors, are provided according to customers’ requirements...
  • Ferrite Magnet Application
  • Ferromagnets are mainly made from iron oxides through sintering process. So, ferrite magnets are usually non-conductive ferromagnetic compounds derived from hematite (Fe2O3), magnetite (Fe3O4) or other metal oxides. Like ceramic...
  • Relay Magnets
  • Magnetic materials for relays are widely used in industrial production and daily life. Relay is an electric component which uses relay magnet to operate a switching mechanism. It controls long-distance circuits by signals in various applications, such as automatic...
  • Sensor Magnets
  • 1. Ferrite magnet for sensors has high cost performance ratio.
    2. It is easy to conduct machining on sensor ferrite magnets...
  • Motor Magnets
  • Like rare earth permanent magnets, ferrite magnetic materials for motors are widely used no matter capacity of motor is very small (measured by unit of dBm) or very large (measured by unit of KVA). Ferrite magnets in motors are commonly...
  • Meter Magnets
  • 1. Ferrite magnets for ammeters are hard and brittle.
    2. With week erosion resistance, ammeter ferrite magnets always accept special surface treatments...
  • Microwave Magnets
  • Microwave ferrite magnets can generate constant magnetic field to control electric current so that microwave signal is amplified and information can be smoothly transmitted. Microwave magnets are widely used in magnetrons, cathode-ray tubes, isolators, circulator...
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