The company is a manufacturer: 

We specially do all kinds of magnetic filters and also support lifting NdFeB, Ferrite, AINiCo, FeCrCo and SmCo magnets, and all kinds Magnetic filter is used in magnetizing water, air and fuel. It is used for car, in agricultural and so on. 

Magnetic Filter---water magnet

For best result, these devices work best if water is magnetically treated just prior to use. Also, it is recommended that magnetc units be placed on both hot and cold water lines. Natural and effective way to soften and neutralize hard and acid water. Water entering is natural, chaotic randomly placed...