Korantada korantada ee graphite waa mid aad u wanaagsan, oo dhaaftay biraha badan iyo boqolaal jeer kuwa aan biraha ahayn, sidaa darteed waxaa loo sameeyaa qaybo ka mid ah korantada iyo burushyada kaarboonka;
Doorka gaarka ah ee burushka kaarboonka
Magnets NdFeB hadda waa birneedka joogtada ah ee ugu awoodda badan.
Matoorada aan burushka lahayn ayaa inta badan isticmaala birlab dhulka dhifka ah ee NdFeB oo leh waxqabad sare,