Ion exchanger 
 The ion exchanger is divided into: types of sodium ion exchange, the yin and yang-bed, mixed bed, softening the device is the sodium ion exchange. The shell of the ion exchange column () generally use hard polyvinyl chloride (PVC), rigid polyvinyl chloride composite glass fiber reinforced plastic (PVC-FRP), plexiglass (PMMA), PMMA Composites transparent glass fiber reinforced plastic (PMMA-FRP), steel rubber lined ( JR), the stainless steel rubber lined material. Mainly used for boilers, thermal power stations, chemical industry, light industry, textile, pharmaceutical, biotechnology, electronics, atomic energy and water treatment of the first channel processing, industrial production are necessary for water softening to the occasion of the ionized water preparation, can also be used for food decolorizing purification of drugs, precious metals, chemical raw materials, recycling, electroplating wastewater treatment.