The Complete List of Suppliers for Benzenesulfonic acid, 2,2-(1,2-ethenediyl)bis(5-((4-(bis(2-hydroxyethyl)amino)-6-((3-sulfophenyl)amino)-1,3,5-triazin-2-yl)amino)-, disodium salt, hexahydrochloride, compd. with 2,2-iminobis(ethanol) and 2,2,2-nitrilotris(ethanol) (1:1:1)