Nantong rong tai biotechnology co., LTD is a professional manufacturer of series products of tryptophan. Company technical force is abundant, has the independent new product development capabilities, can provide users with high-quality products and perfect technical service. Our main products are L - tryptophan, D - tryptophan, DL - tryptophan, n-acetyl - DL - tryptophan, D - tryptophan ester hydrochloride, DL - tryptophan ester hydrochloride and L - threonine, which dominated by L - tryptophan, D - tryptophan products. Warmly welcome friends both at home and abroad to come to my place and guiding, and build up mutual trust, mutual benefit and stable relations of cooperation, in order to promote the common development of my career. The company to "provide the best products" for the purpose, we will continue efforts.

Rong tai company is willing to cooperate with you, common development!