Sinking Of Deep - Tubewell With Pvc Pipe By Reverse, Direct Rotary Rig Boring System With One Nos Meter Room At Dighasipur, Near Rabiul And Sk Hossain Ward No. 17 Within Haldia Municipality. Wbmad/Ulb/Hm/6526/Nit-2473 Dt-22.12.2025.