TUOXIN GROUP TUOXIN GROUP has already been a SINO-FOREIGN joint venture company that integrating the innovation research & development, commercial production of the Biological fermentation & chemical synthesized Nucleosides products including antivirus, nucleotide and nucleosides acid biochemical products, together with Pharmaceutical intermediates. At present, it is the largest R&D and manufacturing company of Nucleosides and Nucleotides in domestic. TUOXIN GROUP has the superiority of research development, modernization production and quality testing.