1.eji bọọdụ kọmputa na-achịkwa ma meghachi omume okpomọkụ n'ime oven.

2. Ọ na-eji eriri silicate aluminom iji meziwanye nchekwa nchekwa.

3. zuru okirikiri ikuku na-ekpo ọkụ na oven, okpomọkụ dị ọbụna karị.