Iyi mashini ni iyo guca ibyuma (GI coil, PPGI coil, PPGL coil) mumabati.
Imashini irashobora kugabanya umubyimba:
1) munsi ya 0.8mm.
2) 0.8-1.5mm.
3) 1.5-2.0mm
4) 2.0-3.0mm
Kugaburira ibishishwa mumashini, noneho bizaringaniza kandi bigorora ibiceri hamwe nicyuma cyangwa reberi, hanyuma umukiriya ashobora gushyiraho uburebure ubwo aribwo bwose kuri sisitemu yo kugenzura PLC, imashini izagabanya uburebure bwikora.