37 Installation of process and utility piping, for production, processing, manufacturing, and packaging equipment, and for beverage, food, dairy, and packaging industry equipment and facilities; Equipment, material handling for production, processing, manufacturing, and packaging equipment, and for beverage, food, dairy, and packaging industry equipment and facilities; Equipment relocation being production, processing, manufacturing, and packaging equipment, and for beverage, food, dairy, and packaging industry equipment and facilities; Mechanical contractor services; Repair or maintenance of chemical processing machines and apparatus; Repair or maintenance of machines and apparatus for processing foods or beverages