Brown corundum, calcined corundum, na zirconium corundum louvre ngwaahịa:
Brown corundum, calcined corundum, na zirconium corundum louvres na-agbanwe agbanwe na resin-yiri egweri wiil. Ha nwere ike ekwedo, elu mkpakọ eguzogide, ekwe-eguzogide, ọma onwe-adị nkọ, elu egweri ọnụego, na ala mkpọtụ. Okwesiri maka nchacha na nchapu ígwè, nchara, igwe nchara, igwe nkedo, aluminom, osisi, plastik na ihe ndi ozo.