Since 1976 Marshall Excelsior Company has been a progressive manufacturer of top quality and competitively priced LPG & NH3 equipment that is leading the industry in innovation and low emission products. We offer a full range of products that support the LPG & NH3 Bulk Plant, Transport, Delivery/ Dispensing, and Domestic applications. MEC is Innovation Made Simple. Contact MEC at [email protected] or call 269-789-6700.