Sagging Sewage Process Lines-- Grime variations can build your drain line to sag. When this happens, the part that has sunk accumulates paper as well as squander bringing about a blockage.ΑΠΟΦΡΑΞΕΙΣ ΠΕΙΡΑΙΑΣ περιοχές εξυπηρέτησης αποφράξεωνΗ τακτική συντήρηση και απολύμανσ