It is well known that two plastic magnetic particles are widely used. But there is a variety of magnetic components, such as magnets can not be attacked, can not be used at high temperature. So, how should we prevent this kind of problem in the use of magnets? For example, in the case of the application of magnets in injection processing, we have those key points must pay special attention to it? No two plastic magnetic mold is clear to everyone that he must be produced by high temperature, only after high temperature forming, injection parts will go out. In this case, if the magnet is put into the injection molded parts together, then the magnet is very easy to demagnetization, and even no magnetic. In view of this situation, we professional magnet manufacturers think that we can deal with this problem according to two methods. Application of high temperature resistant permanent magnet material to replace the general Ndfeb magnet super strong magnet; Second, according to the high temperature mold shell, in the injection parts set aside a place to put magnets. According to these two methods to prevent the magnet in the application of injection parts magnet demagnetization. When it comes to printing, we are not unfamiliar in daily life, but a very common commodity in daily life. We commonly used some text documents, for some traditional text documents is immediately page, then can not touch up. Then the magnet will play an effect at this time, using the left and right cover diagram on the magnet, according to the basic principle of magnet suction. Magnet manufacturers here have some proposals, the magnet in the process of suction will appear very large attack force, if immediately absorbed, the magnet is very easy to break, more slippery is also very inconvenient.