Atụmatụ:
Ọ na-adabara iji hazie ole na ole threaded workpieces nke proofing iberibe, ọtụtụ eri nkọwa na ụdị, na ọ nwekwara ike hazie American eri.
Otu ikechi ezé nwere obere nhazi nguzogide, ike eluigwe na ala, na adaba ojiji Escape ịgbatị bụ karịsịa adabara ọnọdụ ọrụ na mgbagwoju ụdị nke miri oghere na eri.
Uru:
Ngwunye akụkụ dị elu, nhazi ike, na-eyi ihe na-erughị 1/2 ma e jiri ya tụnyere ngwaahịa ụlọ ọrụ ndị ọzọ.
Ìhè n'akụkụ ọnụ ọnụ dị mma, akụkụ-egwe ọka siri ike ndụ dị ogologo, nwere ike iru larịị nke South Korea, Taiwan, Japan.
Europe na United States, ngwá ọrụ ika dị elu.