Ụlọ ọrụ anyị Ngwa anyị ngwaahịa emechachara mbukota emechara ngwaahịa emechara ngwaahịa mgbakọ oghere nlele efu CNC ọgwụgwọ cryogenic igwu mmiri igwe lathe eserese ebe plasma ịgba ịgbado ọkụ polishing igwe ogbugbo igwe lathe