- Alexander Equipment Company, Inc. Serving the Tree Care Industry since 1988, Alexander Equipment is a full service dealer for Morbark brush chippers, tub grinders & whole tree chippers as well as the complete line of J.P. Carlton stump grinders. In addition, we represent Stihl & Husqvarna power equipment, a complete array of Arborist Supplies and huge inventory of Used Equipment. Whether youre ...www.alexequip.com