National Power EngineersDiamond Chamber, Block II, 4th Floor, Unti 4h, 4, Chowringhee Road, Chowringhee Road, Kolkata, West Bengal 700016, India
Wellmaker Engineering CompanyPlot No. 53, Kanta Pukur, 3rd Bye Lane, Near Bus Stop Ichapur Water Tank beside Basant Rai Talab Mandir, Kadamtala, Kolkata, West Bengal 711101, India
C M Flowmeters (India) Pvt. Ltd.Plot No-2, Phase-III, Kasba Industrial Estate, EM Bypass, Anandapur, Kolkata, West Bengal 700107, India