N. D. International
107B, Block- F, New Alipore
Kolkata- 700053, West Bengal (India)
Minerals Lab Services Private Limited
110, Laketown, Block-A.(1st Floor).Kolkata. West Bengal.
Kolkata- 700089, West Bengal (India)
Indian Mine Planners And Consultants
25, First Floor, Sector G, Block E East Kolkata Market Complex,(Raj Market) E.M Bye Pass Connector, (Near Ruby General Hospital)
Kolkata- 700107, West Bengal (India)
Bangalore Test House
No. 241/1, Gopal Lal Thakur Road
Kolkata- , West Bengal (India)