Pragati International, Kolkata
No. 156A, Lenin Sarani, Kamalalaya Centre, 1st Floor, Room No. F 87
Kolkata- 700013, West Bengal (India)
Chemtex Speciality Limited
111 Haute Street Bldg, 86A Topsia Road (S) E.M. Byepass
Kolkata- 700046, West Bengal (India)