N'ihi ụkpụrụ ọrụ ha pụrụ iche, igwe akara laser nwere ọtụtụ uru karịa ụzọ akara ọdịnala (mbipụta mpempe akwụkwọ, ntinye akwụkwọ inkjet, corrosion eletriki, wdg); 1) Enweghị kọntaktị nhazi akara nwere ike ibipụta n'elu oge ọ bụla ma ọ bụ oge ọ bụla, na workpiece anaghị emepụta ...
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