1. First you need to provide is the use of demineralized water system which: 1) heating 2) cooling water 3) process water 4) steam boilers 5) steel smelting industry 6) chemical and pharmaceutical industry 2, the system water time: that is running Time / hour water / average / peak / device needs a continuous supply? If you need to select the Twin centralized control or dual control Twin series, otherwise the menu valve single tank series. 3, the source of water is municipal tap water total hardness \ Groundwater \ surface water, the use of the total area of ??the raw water hardness. For certain types of raw water softener for high hardness, the water cycle system is bound to be reduced, thus resulting in frequent regeneration softener equipment. Relatively reduce the life of the resin. To avoid such situations, you should increase the volume of the resin, which means that the choice of models to increase water softener. 4, the desired soft water per unit flow rate (tons / hour). This may be determined by the nature and requirements of the user equipment; 5, water cycle system is set after set softener models, based on the raw water hardness, work exchange capacity of the resin used can determine the theoretical water cycle system (t). Sixth, the application of water softening equipment: can be widely used to soften steam boilers, hot water boilers, switches, evaporative condensers, air conditioning, direct gas turbine systems, water supply. Softened water treatment can also be used in hotels, restaurants, office buildings, apartments, homes and other domestic water treatment and food, beverage, wine, laundry, printing and dyeing, chemical, pharmaceutical and other industries