According to the top ten brand websites, Wei Milk ranks first. Vitasoy, a soybean milk beverage, has been produced in Hongkong, China since 1940. At present, the production plants are all over Chinese mainland, China, Hongkong, Australia and the United States. Vitamin milk includes brands such as juice, milk, tea drinks, soft drinks, distilled water and tofu. Paper-packed milk-flavored milk-flavored soy milk was developed by the founder Dr. Luo Guixiang. Luo Guixiang hopes to provide a cheap and protein-rich beverage for ordinary families in Hong Kong as a substitute for more expensive milk. Soybean, known as "China Cattle", is abundant in protein and cheap. Luo thought that soybean milk made from soybeans could replace milk, so he developed vitamin milk.