Zenith Enterprises
No. 40, Strand Road, Ground Floor, Suite- 37, 41 & 42
Kolkata- 700001, West Bengal (India)
Mining & Mechanical Tools Co.
47/1, Deshpran Sasmal Road, Near Kadamtalla Power House, Beside State Bank
Howrah- 711101, West Bengal (India)
Royal Engineering Company
35,N. S. Road Ground Floor
Kolkata- 700001, West Bengal (India)