"Vitasoy" products were centred on the high-proteinsoy milk drink that the company first produced. Over the years the company expanded beyond the soy drink products and started to produce a wide variety of beverages. Some of them (such as the fruit juice, milk, tea, soft drink, water, and tofu ) were given the derivative brand name "Vita". Besides, it became one of the largest non-carbonated beverages, food manufacture, and seller in Hong Kong.
In addition, "Vitaland Services Limited"  is founded in 1991, it specialises in the operation and management of the tuck shops in Hong Kong primary and secondary schools and the canteen business. "Vitasoy" also established "Hong Kong Gourmet"  in 2001 to provide high-quality catering services to primary and secondary schools, and meetings.
Vitasoy was founded by Dr. Kwee Seong Lo (1910 – 1995) on March 9, 1940 in Hong Kong with door-to-door delivery of the milk alternative. At that time, many people suffered from poverty and malnutrition due to the higher price of milk, so Dr. Lo wanted to save the children from this blight, but because he realised many Chinese immigrants are lactose intolerant, so he focused on soy milk. The company ceased operations from 1941 to 1945 during the Japanese occupation of Hong Kong. It re-emerged after the war was over.
At first, fresh soya bean milk was delivered to people's homes on bicycle, and later Dr. Lo began selling his product through retail outlets. By 1950, the sales of soya bean milk increased, Vitasoy decided to establish a new factory to meet market demand. In 1953, it adopted the sterilization technology in manufacture of VITASOY soymilk drinks, which enabled the drinks to be stored without refrigeration. In 1975, Vitasoy became the first Hong Kong Company to introduce Tetra Pak packaging technology for drinks production. It involves UHT (ultra-heat treatment) sterilisation of the product and packaging in aseptic cartons, ensures that the drink product can be kept for months without refrigeration. By the late 70's and early 80's, Vitasoy became a well-known household brand and started to expand the overseas markets in the 80s and 90s. Yvonne Lo, the daughter of the Dr. Kwee Seong Lo, established Vitasoy USA Inc. in 1979 and is currently CEO of Vitasoy USA based in San Francisco, CA. Today, Vitasoy products are sell in over 40 markets around the world, including the USA, Canada, Mainland China, Europe, Papua New Guinea, Australia, New Zealand, South East Asia, Guatemala, Trinidad and Venezuela.
In addition, the current CEO of Hong Kong and Macau at Vitasoy International Holdings Ltd is Charles Chyi, Chung, who's known for his innovative works in the Asia market.
Juices - Lychee, sugar cane, orange, mango, blackcurrant and guava, pineapple and mango, apple
Carbonated drinks - cola, Cream Soda, Lemon Lime and Orange
Yin Hai Jelly Juices - Pineapple, Strawberry and Blueberry
Vita Supreme Coffee drink
Teas - Lemon, Honey Chrysanthemum, Chrysanthemum, Green Tea, Supericy and Herbal Tea. "Vita Tsing Sum Zhan Teas" are Sugarcane and Imperate, American Ginseng with Honey, Grapefruit Lemon, Mandarin Lemon, Green Apple with Cucumber, Mandarin with aloe and Apple and Jasmine. "Gor Yin Hai Teas" are Apple, Passionfruit, lemon, peach, lychee; Icy Pink grapefruit, lemon and peach. "Vita Cha T Din" are Icy Lemon, Icy Green Tea, Iced Passionfruit, Iced Apple, Iced Mango, Iced Honey Green Tea, Iced Lemon, Iced Peach
Soy-based salad dressings and mayonnaise
Pasta and noodles
Vitasoy San Sui Tofu Series - Dessert Tofu, Scallop Tofu and Silken Tofu