?? ????????? ??? ????? ??? ???? ????????? ???? ????? ??? ????? ??????????? ?????. ????? ??? ??? ??????? ??? ????????????? ???? ?????? ???? ??? ??????? ??:After employing a sewage process jetter, it's a very good concept to examine the integrity of the sewer systems utilizing a hydrostatic line tester. If there are actually existing leakages in the