Not legal. According to the national standard for food safety prepackaged food labeling regulations, the parties involved in the operation of the actual quality grade does not meet the label labeling grade of sugar, a violation of the general provisions, so the sugar is not labeled grade is not legal. White sugar can be divided into refined white sugar, superior white sugar, white sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar, sugar.