Fuzhou's water quality is not hard, and calcium and magnesium ions are really needed by the human body. But if you really don't like the scale, you can pick one that can remove the scale, the formula is usually written on the "ionic resin". Pure water softener should not be considered, is industrial water, can not drink.
Water purifier, there is generally a central water purification and kitchen water purification, the former is a bath can be used to wash dishes, water throughput, commonly stainless steel ultrafiltration. The latter water throughput is small, usually just soup cooking with, common is the kind of a one by one mold.
Please ask if you have any questions~~~