There are 19 varieties of permanent magnet chuck, specifically: Common standard magnetic cups, strong dense permanent magnet cups, strong dense copper magnetic cups, super strong magnetic cups, round dense magnetic cups, radiating circular magnetic cups, ultra-thin magnetic cups, high precision integrated sinusoidal magnetic cups, single tilt dense permanent magnet cups (including fine tuning sinusoidal magnetic table), precision longitudinal sinusoidal disks, double tilt dense magnetic cups, New inclinable dense pole magnetic chuck, permanent magnet jack, superhard material special strong magnet, wire cutting special magnetic chuck, double-sided permanent disk, permanent magnet square iron, permanent magnet V-shaped square iron, engraving machine special fine dense pole chuck.