a) Mpempe ụkwụ gbasapụrụ nke ukwuu iji gboo mkpa ọzụzụ nke otu dị iche iche.
b) Na elu ike engineering plastic barbell tube mkpuchi mkpuchi.
c) Site na usoro mmachi iji hụ na nchekwa nke onye na-enye ọzụzụ.
d) Obosara nke ntụgharị ahụ kwekọrọ na obosara nke nkwonkwo hip nke onye ọrụ, na-enye onye ọrụ ahụ ahụmahụ dị mma na mkpali ziri ezi nke ìgwè anụ ahụ.
e) Njikọ siri ike nwere ike ịkwalite ahụmịhe ọzụzụ onye ọrụ.