Supply And Installation / Erection Wind Driven Turbo Ventilators-Make Tvi Or Similar On The Existing Roof Made Up Of Asbestos Sheet / Corrugated G.I.Sheet / Toughened Aluminium Sheets At The Shop Floor Roof Height Of 60 ( Approximately ) Complete In All Respect ( As Per Technical Features & Specification Attached ) In Different Shops Under Dy.Cme / Dsl, Mfg, Wagon, Prod & Crane Inside Jamalpur Workshop Under Sse / W / Ws / Jmp