With the development of science and technology and the improvement of people's living standard after the reform and opening up, the improvement of economic conditions, the frequent occurrence of pollution events in water sources and the promotion of people's awareness of safe and healthy drinking wa

1. The green grapes were soaked in ethrel diluent and after a day or two, the green grapes become purple grapes. This grape is uneven in color, contains less sugar, and has less flavor and is harmful to humans.How to identify: Consumers can distinguish between appearance and taste. First of all, you

1, peach: soaked with industrial citric acidPeach is soaked in industrial citric acid, the peach color is bright red and not easy to decay. This chemical residue can damage the nervous system, induce allergic diseases, and even cause cancer. Semi-boiled peach, participate in alum, sweetener, alcohol