Gupta Engineering Works
16, Khanpur Road
Kolkata- 700047, West Bengal (India)
Bysotech (Sister Concern Of M/s. Bysakh & Co.)
No. 55, W. C. Banerjee Street, Near Girish Park
Kolkata- 700006, West Bengal (India)
Integrated Electrolife System
North Badra, Nirmal Sengupta Sarani
Kolkata- 700079, West Bengal (India)
Varsha Udyog
No. 145, Lenin Sarani
Kolkata- 700013, West Bengal (India)