Even if there are defects such as cracks or small holes on the surface, a layer of oxide protective film will react quickly on the newly exposed contact surface.
Even if defects such as cracks or holes are produced on the surface, a layer of oxide protective film is quickly reacted to on the newly exposed contact surface.
Even if there are cracks or small holes on the surface, a layer of oxide protective film will be formed rapidly on the newly exposed contact surface.<br>