Sugar can be divided into sucrose and beet sugar. According to the nature of sugar, there can be sucrose, glucose, fructose, maltose and lactose, among which fructose is the sweetest, followed by sucrose, glucose is not too sweet, and maltose and lactose are less sweet. Ordinary sucrose must be digested after eating, and then it can be converted into glucose for human absorption, and glucose can be directly absorbed, so it is a good nutrient for children, the elderly and patients. From commodity to commodity, sugar can be divided into white sugar, brown sugar, granulated sugar, brown sugar, rock sugar, glucose and maltose. Brown sugar is a kind of sugar containing honey. In the process of producing sugar from sugarcane, two products can be produced, granulated sugar and molasses. When producing brown sugar, molasses is not removed, so brown sugar is actually a mixture of sugar and molasses. Molasses absorb water easily, and brown sugar is often caked by moisture when put in a bottle. This is why caking is a big disadvantage of brown sugar and it is very inconvenient to use. White sugar is made by separating molasses from brown sugar and then decoloring and crystallizing. Sugar with larger particles is called granulated sugar. Brown sugar is made of common brown sugar after coloring. Although the color is similar to brown sugar, it does not contain molasses and will not get wet, which is different from brown sugar. The advantages of brown sugar are bright color and large particles. Rock candy is made by recrystallization of sucrose. Its crystal is good and large, and its nutritional price is relatively high. The square candy made of white sugar bonded together is a special commodity called sugar cube. Maltose, also known as maltose, is made from barley malt. Like glucose, it is easily absorbed by the human body.