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; ß-hydroxy ß-methylbutyrate, a nutritional solution under the myHMB brand; adenosine 5'- triphosphate under the PEAK ATP brand for body composition and athletic performance; 2-hydroxybenzylamine, a naturally occurring compound that support cellular health; enfinity, a downstream metabolite of caffeine; vitamins and dietary supplements under the FZZR and STRW brands; and glucosamine tablets under the OptiTab brand. The company was founded in 1996 and is headquartered in Shanghai, China. TSI Group Co., Ltd. operates as a subsidiary of JIYUAN (HONG KONG) LIMITED.