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Chovala choyenera cha oyenera kusindikizira chiguduli chambiri champhamvu kwambiri
Chovala cha Quartz ndikugwiritsa ntchito quartz firphind ndi machenjere wina ndi kupindika, kutsekera, njira zina zopangira zokhala ndi nsalu ndi nsalu. Mtundu wa nsalu yoyera ya ufa yoyera ndi kutentha kwambiri kukana, kukana kwa chipongwe, kukana moto, osakhazikika, otsika madeji.
