Office Address: S.D.Enterprise 5, Bijoy Mukherjee Lane, Ground Floor, Kolkata-700 025 Contact : MR.B.DUTTA Mob.No:9830992336/9903589898 Factory Address : National Highway - 6 (Delhi Road) Near Hyundai Car Showroom, Howrah-711409, Behind Reliance Telephone Exchange       Contact persons: Mr. B. Dutta : +91 99035 89898 / 98309 92336 Email : s.d.enterprise@hotmail.com Website : http://www.sdenterpriseindia.com