Under the direction of Professor Roberts, CoEBio3, UK, we owns a proprietary technology for making polyamino acids of unique quality, economically in commercial scale. They can only be biologically synthesized before. synthetic, non-immunogenic, non-cytotoxic, high water-soluble epsilon-polylysine (base form, mw 20-40k, 99.5%), 136USD/10g Dendritic poly-L-lysine (20-40k) Core: lysine (without any hexamethylenediamine and ethylenediamine) 231 U