Rr Work For Replacing Pvc Water Tanks After Dismanling Dilapidated Rcc Roof Top Tanks For Block Ace 3 Blocks X 2 6 Nos Tank On 4storied And Repair Of Rcc Tank Of Block B At Rhe Becharam Chatterjee Road Phase I C Type Kolkata Wbhousing/ae/kssdivhd Enit 06 Of 25 26