● Nkà na ụzụ consheat-na-enye ọkụ ọkụ mgbe niile n'okpuru obere ike
● R-njikọ: Mee ka mkpuchi mkpuchi na hobs rụọ ọrụ n'otu oge
● Schott glass- akara nke ngwaahịa adịchaghị mma
● Mpekere dị elu emere na Germany
● Nchekwa-Mkpọchi ụmụaka na nchekwa oke ọkụ