Drilltech Consultant Private Limited
No. 54- A, Pratap Aditya Road
Kolkata- 700026, West Bengal (India)
The Venture
19, Sashi Bhushan Neogi Garden Lane, P.O. Baranagar
Kolkata- 700036, West Bengal (India)
Yusufally And Sons
No. 138, Canning Street, Ground Floor, B. R. B. Basu Road
Kolkata- 700001, West Bengal (India)
The Orient Engineering Company
No. 118 F, Dharamtalla Street, Moulali
Kolkata- 700013, West Bengal (India)