After opening its store in 1959, Superior Trading Company soon made business partners with several popular ginseng and herbal suppliers in Hong Kong, South Korea, and Taiwan. Here is a chronology of a few of their popular products as sole agents: 

1961 – South Korean government’s Office of Monopoly named Superior Trading Company as exclusive sole agent in North America and Europe for their Korean Red Ginseng roots and products (tea, extract, capsules, and powder) until 1975. 

Mr. Chung makes first visit to Marathon, Wisconsin and buys Cultivated American Ginseng roots directly from Helen Zawisilan, Edward and Frank Volhard, some of several local ginseng growers.

1961 – Haw Par Brothers Co. (Eng An Tang) appoints Superior Trading Company exclusive agent for Tiger Balm for North America until 1982. Superior also secures exclusive agencies for Gum Wall Herbal Tea (Yuen Kwong Wo), Po Chai Pills, and Wong Lo Kat Herb Tea. 

1964 – Nin Jiom (HK) Medicine Manufactory appoints Superior Trading Company exclusive importer and agent for United States 

1979 – Along with its sister company, Overseas Factor, Superior became the U.S. distributor for several popular Chinese health products: a) Peking Royal Jelly, b) Pine Brand Red Panax Ginseng Extractum (green box – original), c) Renshenfengwangjiang (red box – Ginseng & Royal Jelly), d) Zheng Gu Shui Liniment. They also became one of the first importers of Kirin, Shih Chu, and Chang Pai Mountain Imperial Wild Ginseng roots (market price US $110,000.00/kilo) from the government’s China Native Produce & Animal By-Products Import & Export Corporation, Head Office in Beijing. 

1986 – Superior partners with two Wisconsin ginseng growers in purchasing a farm and creating a new ginseng farming operation named WAGCO (Wisconsin American Ginseng Corporation). 

1990 – Superior and Overseas begin marketing Tong Ren Tong products in the U.S. market. Tong Ren Tong is a reputable Chinese herbal and medicinal manufacturer with a network of stores throughout China. 

1992 – Superior purchases a 546-acre farm in Ontario, Canada and, in a joint venture with Chai-Na-Ta, the first publicly traded ginseng company and largest North American Ginseng grower, harvests ginseng from them over the next four years. 

2009 – Superior celebrates its 50th anniversary in business.