Marabu North America announced that Bob Keller will join the Charleston, SC-based company as the new general manager. Prior to joining Marabu North America, Mr. Keller was the general manager for NanoPore Insulation, an international joint venture between Sealed Air Corporation and NanoPore, Inc. Mr. Keller’s expertise with ink development includes raw material sourcing, manufacturing, quality control, color management and hardware development.     Earlier in his career, Mr. Keller was the sen...