S. G. Instruments
No. 11/D, Jadav Chandra Ghosh Lane
Kolkata- 700036, West Bengal (India)
Apex Engineering Concern
38, Netaji Subhas Road, Ground Floor
Kolkata- 700001, West Bengal (India)
Allied Tools Corporation
No. 28/ A, Netaji Subhas Road
Kolkata- 700001, West Bengal (India)
H. K. Company
No. 12, S. N. Roy Road Sahapur
Kolkata- 700038, West Bengal (India)
Dawn Instrment Engineering
Ichapur, Purbapara, Behind Mahasakti Sweet, Santragachi
Howrah- 711104, West Bengal (India)
Zoom Instruments Mfg. Co.
25/7, Mahendra Nath Sen Lane
Kolkata- 700040, West Bengal (India)
Fairdeal Corporation
135-A, B. R. B. Basu Road, Shop No. 9
Kolkata- 700001, West Bengal (India)
Carnation Industries Limited
No. 222, A.J.C., Bose Road
Howrah- 700017, West Bengal (India)