Simbi, yakakwenenzverwa, simbi ganda, uye zvimiro zvakakandwa zvakazadzwa nekudengenyeka-kuderedza epoxy resin-bonded mineral casting.
Izvi zvinogadzira zvimiro zvakaumbwa zvine kugadzikana kwenguva refu izvo zvinopawo yakanakisa nhanho yekusimba uye yakasimba kusimba.
Inowanikwawo neradiation-absorbing filling material