Permanent magnetic alloy is a kind of material which has a great energy product. It requires that the hysteresis loop (B-H loop) has a large area, both the coercive force and residual induction are fairly high, and the demagnetization curve has a big convex coefficient. At the same time, permanent magnetic alloys are also provided with special characteristics, such as a stable texture, invariable magnetic property at any time, and decrease of residual induction no related with the change of outside magnetic field, time, temperature, mechanical vibration, radiation, etc. Our permanent magnetic alloy products include Fe-Co-V alloys, hysteresis alloys, as-cast Al-Ni-Co alloys and sintered Nd-Fe-B permanent alloys.