Nutritional products, main revenue source of multilevel marketers

The combined sales of domestic leading 10 multilevel marketers amounted to 1.4 trillion won last year, according to data released by the Fair Trade Commission.

The data found that sales of nutritional supplements (e.g., Amway Corporation’s multivitamin Double X) accounted for 43 percent of total sales, far surpassing share of other products, such as communication products (29 percent), cosme...