Magnetic water treatment device

We want in the following:
Import of agriculture magnetic water treatment device - or - water desalination - - main irrigation pipes 6-inch
Please clarify the following points:
-Quality of metal used in the device and its resistance to rust and salinity,
-Price per device - delivered to Cairo,
-Delivery period - preferably less possible time,
-Comprehensive explanation for the installation of the machine - spare parts that come with it - International Warranty Statement of the device - to c