Thomson Group is a real estate enterprise established in Hong Kong, listed in Hong Kong, and mainly invested in Shanghai, founded by Shanghai-born Taiwanese businessman Tang Junnian, later listed in Hong Kong, and in its heyday had controlled four listed companies in Hong Kong. BY-HEALTH was founded in 2002 by Liang Yunchao, Tang Hui and other entrepreneurial members. It specializes in nutritional supplement products and has been the sales champion in the non-direct sales of nutritional healthcare products for six consecutive years. BY-HEALTH mainly uses imported materials, and by the end of 2010, 65.51% of BY-HEALTH's raw materials were imported. in March 2012, there was news that BY-HEALTH's spirulina products had excessive lead content, and the company said that it was not involved in any lead overloading problem.