Hindustan Dorr Oliver Limited
No. 3- A, Hindustan Road, Gariahat
Kolkata- 700029, West Bengal (India)
Unitech Water Technologies Pvt. Ltd.
Kailash Bhawan, 2nd Floor 32/1, Gariahat Road South
Kolkata- 700031, West Bengal (India)
Envirospec
77A / 72 Raja S. C. Mullik Road, P. O. Regent Estate
Kolkata- 700092, West Bengal (India)
Invenir Tech Systems Pvt. Ltd.
6, Parkside Road, Desapriya Park, 2nd Floor
Kolkata- 700026, West Bengal (India)
Unique Solution Systems
No. 54-A, Guru Pada Halder Road
Kolkata- 700026, West Bengal (India)
Batty & Co. Private Limited
No. 228, A.P.C. Road
Kolkata- 700004, West Bengal (India)