Carbon arụ ọrụ
Aluminom urughuru
Bentonite ala
corundum
Ígwè ntụ ntụ
magnesia
Iron phosphate
Lithium carbonate
Graphite ntụ ntụ
Lithium ígwè phosphate
Magnesium bọọlụ
Ụwa dị ụkọ
ájá silica
Quartz ájá
Silica gel urughuru
Silicon ntụ ntụ
Silicon carbide
Agbagba ígwè