Spectro Shyam Labs Private Limited
Shyam Towers, EN-32, Sector -V, Salt Lake City
Kolkata- 700091, West Bengal (India)
EFRAC
Nilgunj Bazar, Barasat Subhash Nagar 24 Paragna
Kolkata- 700124, West Bengal (India)
Eco-Techno Enterprise
9 Lalbazar Street, 3rd Floor Block A
Kolkata- 700001, West Bengal (India)
B E Communications Private Limited
27e, Brojomoni Debya Road
Kolkata- 700008, West Bengal (India)
Techno Environ Engineers
At/Po, Nilgunj Bazar, Barasat Barrackpore Road
Kolkata- 700121, West Bengal (India)
Environ India
UNS 75, Unnayan Bengal Ambuja Commercial Complex 1050/1, Survey Park
Kolkata- 700075, West Bengal (India)