The Expander Pin System was invented in Sweden in 1970; it is a well proven and permanent option to welding and line boring. Unités Diesel was founded in 2006 in Lotbinière to serve Québec and the Maritimes with the Expander® System line of products. Our goal is to deliver fast and efficiently. Patrick Lemay, our President, is a fully-qualified technician with several years of experience in the maintenance and repair of equipment and machines. Monique Cormier, our Vice-president, she is responsible for the day-to-day management of the company.