supply of supply at site, installation, testing and commissioning of heavy duty passenger escalators at railway station.supply at site, installation, testing and commissioning of heavy duty passenger escalators at railway station.,design, manufacture, supply at site, installation, testing and commissioning of heavy duty passenger es calators at railway station. the escalator shall be of state-of-the-art technology as per the rdso specification no. rd so/pe/spec/tl/0095 (rev 3)of 2019. warranty: 24 months from the date of commissioning or 30months from the date of supply as per rdso specification and inclusion as per annexure - i, enclosed at sl no.7 of this tender [ warranty period: 30 months after the date of delivery ]