Ngeminyaka yokuhlangenwe nakho ekukhiqizeni amaketanga okuphakamisa umlenze we-4 athengiswayo , I-Lishenflex ingahlinzeka ngamaketanga amaningi okuphakamisa umlenze we-4 athengiswayo . amaketanga okuphakamisa umlenze we-4 athengiswa angahlangabezana nezinhlelo zokusebenza eziningi, uma udinga, sicela uthole isevisi yethu ye-inthanethi ngesikhathi esifanele mayelana namaketanga okuphakamisa umlenze we-4 athengiswayo . Ngaphezu kohlu lomkhiqizo olungezansi, ungase futhi wenze ngokwezifiso amaketanga akho okuphakamisa imilenze emi-4 ayingqayizivele ukuze athengiswe ngokwezidingo zakho ezithile.