Tender For maintenance of w/s (two year repairing of pvc/c.i./d.i./m.s. water line, r/o sluice valve and reflex valve and s/f flushing sluice valve in network sector-130, 162 and village- gulavali, mohiyapur, yakootpur, nagla nagli, nagli sakhpur, rohillapur) noida.