Hunan Flag Bio-technology Co.,ltd

Established in 2002, Hunan Flag Bio-Tech Co., Ltd is a High Tech enterprise， integrated with the R&D, manufacturing and sales in enzymes and bio-catalytic products. Featured products: 
1.L-glutathione reduced, 
2.L-glutathione oxidised,
3.S-acetyl-L-glutathione
4.L-norvaline
5.D-phenylalanine
6.D-alanine
7.D-tryptophan
8. Sialic acid 
9. Citicoline
10. Citicoline sodium
11.alpha arbutin