a) Site n'aka inyeaka iji hụ na nkwụsi ike nke mmegharị ọzụzụ
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) Site na ngbanwe FOAM dị iche iche, enwere ike ịhazi ya n'akụkụ dị iche iche iji gboo mkpa nke ndị dị iche iche.