Pa610 ahịhịa waya, nwere a dịtụ obere njupụta, obere mmiri absorption, iguzogide siri ike alkali na adịghị ike acid, abrasion eguzogide na ike ọgwụgwụ, wdg, ọdabara a dịgasị iche iche nke ulo oru brushes, dị ka: mkpụrụ osisi na akwukwo nri ihicha ahịhịa mpịakọta, iko. ahịhịa na-egbuke egbuke, wdg, alth ...
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