Palmer Supplies Company announced that it has merged with Michigan-based Harry Holland Company, consummating merger discussions that began almost five years ago. The new company, called Palmer Holland, Inc., will specialize in distribution to various markets, including the paint, coatings and sealants markets.      “Although management discussions have been underway for the past six months, we have been talking about this merger for the past five years,” said Joe Lykins, president of Palmer S...