The magnetic material of the molecular pump plant mainly refers to the material composed of the transition elements iron, cobalt, nickel and its alloys that can directly or indirectly generate magnetism.

　　Magnetic materials are divided into soft magnetic materials and hard magnetic materials according to the difficulty of magnetization. Compared with permanent magnetic materials, soft magnetic materials are relatively easy to be magnetized and easy to demagnetize. The conversion and transmission of magnetic and electromagnetic energy; hard magnetic materials, also known as permanent magnetic materials, after being magnetized by an external magnetic field, even under the action of a considerable reverse magnetic field, can still maintain a part or most of the original magnetization direction. Electrical signal conversion, electrical energy-mechanical energy conversion function.

　　The NdFeB permanent magnet material of Molecular Pump Factory is the representative of rare earth permanent magnet material. According to different production processes, it can be divided into three types: sintering, bonding and hot pressing. The sintered NdFeB permanent magnet material is made of powder metallurgy process. Mainly used in motors, generators and other fields.

　　The magnetic material industry of the molecular pump factory, in a broad sense, is a manufacturing industry that transforms mineral materials or metal materials into parts and components supporting related industries through deep processing. Its products are not final consumer goods, so it is in the midstream industry.