Shanghai Hanhong Chemical Co., Ltd. is a professional enterprise engaged???in??? researching, developing ,manufacturing and exporting unnatural amino acids ,nucleosides,nucleotides , chiral chemicals and other pharmaceutical intermediates. It also provides custom synthesis service. It has owned a lot of senior researchers, including doctors, professors and experts of organic chemistry for R&D and process control. The company has built R&D center in the Universities,and has established our chemical ...