Ngosipụta R&D Nnyocha na mmepe Laser ịcha Ngwaahịa metal mpempe akwụkwọ Nleba anya ịdị mma nke ngwaahịa Nyochaa ogo mbupụ Ngwa nchọpụta dị elu na nke dị ala Laser ịcha Line mmepụta Line mmepụta