Ningbo Guoguang Biotechnology Co., Ltd. is located in Cicheng of Ningbo City, Zhejiang Province, covers an area of 30 acres, It is a production-oriented enterprises specialized in producing food additives and nutrition enhancer, medical intermediate company has a number of professional and technical personnel engaged in the type of amino acid products research and development. At present company mainly produce L-citrulline, L-citrulline-D, L - malic acid (2:1) (1:1), L-tryptophan, L - Lysine, DL-amino acid, L-methionine, L-aspartic acid (sodium), L-valine, taurine, L-alanine, L-threonine by, L-leucine, L - Isoleucine, glycin and other products. We make sure each people contact us will get profit based our excellent quality and reasonable prices, attentive service.