TSI Group Co., Ltd. engages in the discovery, development, manufacturing, and sale of vitamins and dietary supplements for healthy lifestyles worldwide. It offers vegan glucosamine under the GlucosaGreen brand name; ß-hydroxy ß-methylbutyrate, a nutritional solution under the myHMB brand name; adenosine 5’- triphosphate under the PEAK ATP brand name for body composition and athletic performance; 2-hydroxybenzylamine, a naturally occurring compound to support cellular health; enfinity, a downstream metabolite of caffeine; vitamins and dietary supplements under the FZZR and STRW brand names; and glucosamine tablets under the OptiTab brand name. The company was founded in 1996 and is headquartered in Shanghai, China. TSI Group Co., Ltd. is a subsidiary of JIYUAN (HONG KONG) LIMITED.