Ngwa: A na-ejikarị Bauxite eme ihe na ụlọ ọrụ na-agbaze aluminum, nkedo nkenke, ụlọ ọrụ refractory, aluminom silicate fire-proof fiber, ciment ụlọ ọrụ, abrasive ihe na ceramics ụlọ ọrụ.