Home Company Profile Products Facilities Quality Careers Contact Sitemap               Help Line : +91 321 2246912 E-mail : nsi@nsilimited.com Home / Contact     Corporate Office   Ground Floor, Bally House, 69A, Karaya Rd, Rowland Row, Ballygunge, Kolkata 700019, West Bengal, India     Factory   Beltala, Chamrail, Howrah 711114, West Bengal, India   Contact   Phone +91-33-2287-9977 / +91-9073-949-203 Email nsi@nsilimited.com