D.I. Units are purification plants using Ion Exchange (I.X.) technology to produce demineralized water with low salt concentration and conductivity, suitable for process use or recycling rinse waters. CIE systems feature a unique regeneration process that optimizes the use of HCl and NaOH, significantly reducing waste volumes by up to 50% compared to conventional reverse osmosis systems. This makes the CIE D.I. Units highly efficient and environmentally friendly solutions for water treatment.