This product is based on the liquid Nano-Se as main ingredient for health care supplement. Nano-Se {PRES-Particles of Red Elemental Se (Se0)} is manufactured by the Nano-Technology, this manufacturing process is recognized as the first newly developed technology internationally. Nano-Se product is now recognized as the National Grade New Product in China, and is patented in the People’s Republic of China under the patent Number (ZL97107038.5).