Underground/Overheads(Elevated) water tank cleaning Vendors

We are an ISO 9001 -2008 certified company in to building management Services looking for Experience and Expertise in under ground / overheads Elevated water tank cleaning contractors who are having modern tank cleaning equipments. We have approximately 18 to 20 numbers of overheads and elevated drinking water tanks having water storage capacity 67,15,000 (sixty seven lacs fifteen thousand litters ). Interested contractors contact urgently to Mr. Nitin Khamkar