We were interested in the CDI 120-2 water softener. Your representative, Mr. Klein, visited us on April 30, 2021. He was a very good and friendly representative who explained the system's operation to us in a very clear and understandable way. Afterwards, we decided to purchase the system. It was delivered at the beginning of April and installed and commissioned by a very competent technician. A very good investment, especially with a water hardness of 22° dH.