Tender For e.o.i for round the clock operation and comprehensive maintenance of etp & stp of capacity (25+125) kld 150 kld including supply of treatment chemicals-poly (sodium hydraoxide naoh)/(sodium hypochloride - naoc), potassium alum (chemical formula- (so4)2 - 12h2o, ,lime (calcium oxide - cuo) ,resin for softener plant, comprehensive maintenance of the etp and stp system capacity (25+ 125) kld - 150 kld including regular maintenance, preventive maintenance of equipment and components.