Nchọpụta Nchọpụta Colki

Usoro mmịpụta ọla mmịpụta na-ezo aka n'ụdị inweta ọla kọpa site na os, yana mejupụtara usoro kemịkal, nke anụ ahụ na nke electromemical usoro.

A na-eji nfucha roba na ọnọdụ abraveven & corrosive.