JANASWASTHYA KARIGARI BHAWAN (NIJALAYA)Office of Public Health Engineering Department (PHED), Govt. of West Bengal, CN8, Street Number 18, CN Block, Sector V, Bidhannagar, Kolkata, West Bengal 700091, India
Aimil Ltd.Shrachi Tower , 6th Floor C&D Block, 686 Anandapur E.M. Bypass, (Near Ruby General Hospital), Kolkata, West Bengal 700107, India