Some common types are&colon; vans, reefers, flatbeds, sidelifts and tankers. These ranged from simple flatbeds to complete tow trucks, dump trucks, and fire trucks. Other types of semi-trailers include dry vans, flatbeds and chassis. In addition, there were four- and eight-wheeled tankers, open wagons, covered vans and flatbeds. Low loaders, for construction machinery and heavy plant vehicles, are not considered as flatbeds. Consequently, flatbeds and open wagons were utilized. A chassis cab version was also offered for use with bigger cargo boxes or flatbeds. They manufacture highly specialized low beds, flatbeds and chassis.