Akụkụ stamping N'ime igwe ụwa, 60 ruo 70% bụ mpempe akwụkwọ, nke ọtụtụ n'ime ha na-etinye akara na ngwaahịa emechara. Ahụ ahụ, chassis, tank mmanụ, mpempe ọkụ nke ụgbọ ala, uzuoku uzuoku nke igwe ọkụ, akpa akpa, mpempe igwe silicon ígwè nke igwe eletriki na ngwa eletriki niile bụ akara ma hazie ya.
Mpempe ụgbọ ala igwe / stampụ ụgbọ ala / ọla kọpa stamping / stampụ nkenke / nkenke stampụ ọla.