Ụlọ ọrụ ahụ bụ onye na-emepụta ọnụ ụzọ ọkụ, a na-ahazikwa ọnụ ụzọ ọkụ ígwè ka ọ bụrụ ọkụ na-eguzogide maka nkeji 120. Anyị na-etinyekwu anya na ịdịmma na ọrụ. The dum okpukpu abụọ-akụkụ sealing teepu nke ọkụ ọnụ ụzọ nwere ezigbo akara arụmọrụ, ezigbo elu na ọ dịghị mmebi n’elu electroplating oyi akwa. Nnukwu okpomọkụ na-eguzogide, ike siri ike.