Okwu Mmalite Ngwaahịa A na-arụ ọrụ igwe ndị a ka ọ na-ejikwa ọtụtụ ihe abrasive dị iche iche, gụnyere ájá, grit, ciment, na ihe ndị ọzọ siri ike na-eji na nkwadebe elu na ngwa nhicha. Na mgbakwunye na owuwu ha siri ike, a na-emepụta hoses sandblast iji belata stat ...
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