Hesheng Magnet Group waxay bixin kartaa 4 nooc oo waaweyn oo birlabyo joogto ah sida NdFeB - birlabyada boron ee neodymium, SmCo - birlabyada kobalt ee samarium, birlabyada Alnico iyo Ferrite. Maaddooyinka birlabyada kala duwan waxay leeyihiin sifooyin birlab ah oo u gaar ah, habka wax soo saarka ee kala duwan, faa'iidooyinka iyo khasaarooyinka. Waxaa loo habeyn karaa cabbir kasta oo la soo saari karo qaabab kala duwanna waa la dahaadhi karaa ama lama dahaadhi karo, waxaana loo jiheyn karaa jihooyinka birlabyada kala duwan sida ku xusan codsiga.
