kwụsị ngagharị N'ihi yarn ezumike, nnukwu eriri, ákwà pịa-apụ, agịga breakage, n'elu-torque, inyefe azụ, egwu njehie, na-ekwesịghị ekwesị ọnọdụ nke presser, oké yarn ma ọ bụ na-eru na mmepụta lekwasịrị.
