Refrigerated bodybuilder Trumac Group says it is experiencing an increase in demand for its box bodies from the 3.5-tonne chassis cab market. It is reporting a 50% increase in orders over the next three months, and is confident that this demand will continue throughout 2007. MD Jarvis MacDonald says: "With industry changes affecting the O-licence and the introduction of digital tachographs customers are starting to downsize to 3.5-tonners."