YG20 ndi mtundu wa carbide yopangidwa ndi simenti, makamaka tungsten carbide.Sichikhala ndi chithandizo cha kutentha, chimakhala ndi kuuma kofanana kwa mkati ndi kunja, ndipo ndi koyenera kupanga misa.YG20 ndiyoyenera kupanga zojambulajambula, monga kupondaponda magawo a wotchi, mapepala opangira zida zoimbira, etc., ...
Werengani zambiri