Dear Sirs,
I am living at Anantapur, Andhra Pradesh, where the underground water is hard. In the market the water softening plants are more expensive. I want to assemble a water softener for my personal use. So, I request you to intimate the chemical name of the Softening Resin, which is used in water softeners.
Thanking you,
Yours sincerly,
D. Narendra
dunari123@rediffmail.com