Kooxda Hesheng Magnet waxay keeni kartaa 4 nooc oo waaweyn oo birlab joogto ah sida NdFeB-neodymium iron boron magnets, SmCo-samarium cobalt magnets, Alnico iyo Ferrite magnets. Maaddooyinka kala duwan ee magnetic waxay leeyihiin sifooyin magnetic u gaar ah, habka wax soo saarka ee kala duwan, faa'iidooyinka iyo khasaaraha. Waxaa lagu habeyn karaa cabbir kasta oo wax soo saar leh iyo qaabab kala duwan ayaa lagu dahaaran karaa ama la dahaaran karaa, oo loo jihaysan karaa jihooyinka magnetismka ee kala duwan sida ku qoran codsiga.
