Wolstenholme International Inc., manufacturers and sellers of Unipak® metallic inks, bronze and aluminum pigments, and carbon black dispersions, has acquired several key personnel from the former MD-Both Industries. The following people will be based out of West Chicago, Ill.: Henry Brooks, executive vice president; Nick Rink, business development manager; John Erbeck, regional sales manager; Joseph Gantner, regional sales manager; Elise Balsamo, marketing manager; and Karen Allaire, executive assistant.