At present, there are many types of thermometers and sphygmomanometers in Chinese market. In accordance with principles of production, mercury-free thermometers can be roughly divided into three types which are new type thermometer (digital, electronic thermometer), infrared thermometer and strip thermometer. There are two kinds of mercury-free sphygmomanometer. One is electronic sphygmomanometer, and the other is aneroid sphygmomanometer.
The brands of mercury-free thermometers and sphygmomanometers sold in the market are diversity, and the performance, accuracy, use and prices of different brands of products are very different. At the same time, there is also a big gap on the nature and the scale of manufacturing enterprises.
