717 ion exchange resin 
 The ion exchange resin is a function of ion exchange polymer materials. Itself the ion in solution, it can be exchanged and the same number of ions in the solution. According to the different nature of the exchange groups, ion exchange resins can be divided into the cation exchange resin and anion exchange resin two categories. Commonly used in ion exchange equipment filled with the resin are 201x7 strong alkaline styrene anion exchange resin and 001x7 strong acidic styrene cation exchange resin. If you use the polishing resin in the water quality requirements are particularly high occasions.