Hongyuan R&D Ltd. takes great pride knowing we were one of the companies in the world to develop and manufacture hot melt ink rolls. Hot Melt Ink Rolls are specialized foam rolls that are friction loaded with a variety of Hot Melt Inks for use in Hot Ink Contact Coders. SANMU offers hot melt ink rollers that can perform from 200 F (93 C) 325 F (163 C). With five different inks, eight different colors and nine different sized rollers, Hongyuan R&D Ltd. is certain to have an answer for your application.