You can contact Mr. Dinkar ...
Published by Anand Kumar Pandey, Environmental Design Engineer - P.H.E. at Dass Rasayanic Services
You can contact Mr. Dinkar Saxena
He is an water and waste water treatment expert. And a master of diffusion process.
Contact no. +91-9837007304
mail:- dinkar@wateronline.co.in , dinkar.saxena@gmail.com