1. Operates continuously and the water quality of the product is stable.

 2. No need to use acid -alkali to regenerate.

 3. Will not stop operation because of regeneration.

 4. Saves the recoil and the clean water used.

 5. Produces the ultra-pure water by the high production rate(Production rate can reach as high as 95%).

 6. Non-regeneration sewage, need not the sewage treatment facility.

 7. Does not need the acid-alkali reverse and the acid-alkali dilution delivery equipments.

 8. Can reduce the building area of workshop.

 9. Uses safely and reliably, avoids the workers contacting acid and alkali.

 10. Decreases the running and maintenance cost.