2. Glass bottles are molded at high temperature, non-toxic and tasteless, and are the main packaging containers in food, medicine, chemical industry and other industries.
Soaking black beans with vinegar is a health preserving method. Black beans are traditional health food, and there is a saying among the people that "if you want to live longer, you should eat black beans often". This black bean is actually a black bean. The book Materia Medica in the Tang Dynasty said that black beans can "improve eyesight and soothe the nerves". Long service time, good color, white but not old. In addition, in the book Compendium of Materia Medica, there are many examples of eating black beans for health preservation, such as "swallowing 27 black beans every morning until you are old", "Peach blossoms are boiled with black beans, and if you eat them often, you can tonify the kidney" and so on. Chinese medicine believes that "beans are the valley of kidney", but according to the theory that five colors enter the five internal organs, black enters the kidney, so eating black beans often will naturally improve the effect of tonifying kidney. We often say that the kidney dominates the bone, while "the tooth is the bone".