Degrees Celsius and Fahrenheit separately in where?

Celsius and Fahrenheit belong to common units of the thermometer. Celsius in ℃, it is under standard atmospheric pressure water mixture as the temperature of 0 degrees Celsius, the temperature of the boiling water as 100 degrees Celsius, 0 degrees Celsius and 100 degrees Celsius was divided into 100 parts, each uniform represent 1 degrees Celsius; Fahrenheit ℉, says it is freezing point temperature of the water as 32 ℉, a standard atmospheric pressure, the boiling point of water ( 沸点) At a temperature of 212 ℉, middle is divided into 180 equal parts, each equal parts represent 1 degree, this is the Fahrenheit scale. Then you know degrees Celsius and Fahrenheit separately in where? According to our sales of the thermometer, the Celsius temperature mainly use in most countries, including China, more and the calculation method of conversion Fahrenheit is F = ( C * 9/5) + 32; Fahrenheit is mainly used in Western Europe, the United Kingdom, the United States and other english-speaking countries, conversion method for calculating the Celsius temperature is C = ( F - 32) * 5/9. In fact, where is the specific use or want to see the final use of the temperature of the unit.