Awọn oriṣi Ipese Imọ-ẹrọ GL ti okun ita gbangba fun eriali, duct, ohun elo ti a sin taara, gẹgẹbi awọn ipolowo, opgw, asu, okun ju silẹ, ati bẹbẹ lọ.
Pls Fọwọsi alaye olubasọrọ rẹ fun gbigba awọn agbasọ deede ati iṣẹ to dara lati GL!