1. Ohun elo ti abẹfẹlẹ 1.1 Seramiki: Abẹfẹlẹ seramiki jẹ didan ati pẹlu lile diẹ sii, nitorinaa nigba ti o ba lo si gige irun, yoo jẹ diẹ sii sooro, idakẹjẹ, ati ki o dinku-ooru lakoko iṣẹ.Lakoko ti o jẹ brittle ati lile lati ropo.1.2 Irin Alagbara: o jẹ aami deede pẹlu “China420…
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