The Institution of Engineers (India)The Institution of Engineers (India), West Bengal State Centre, CK-17, Kolkata, , Sector II, Bidhannagar, Kolkata, West Bengal 700091, India
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Astha Energy Services Pvt. LtdCimsys Tower, 2nd Floor, Y- 13, Block- EP, Sector- V, Salt Lake City, Kolkata, West Bengal 700091, India
Ruma imitation & Cosmetic25, Manna Para Rd, MandalPara, Baranagar, Kolkata, West Bengal 700090, India
BASF IndustriesDebendra Chandra Dey Rd, Ward Number 57, Kolkata, West Bengal 700046, India