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Since 1954
Registered Office
33/1, Netaji Subhas Road, Marshal House, Ground Floor Room No. 37. Kolkata- 700001
Contact No: +91 9831154686/+91 8777272091
Email: otccal@gmail.com
GSTIN:19AAAFO5181G1Z7
IEC: 0209009365
ISO 9001:2015
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