Large item transportation is a relative concept, which generally refers to the transportation of special equipment with large volume and heavy weight. The transportation of large items requires the use of professional transportation tools to complete. Such as the transportation of wind power generation fans and large capacity containers. Vehicles for large-scale transportation generally have the characteristics of being ultra wide, ultra high, and overweight. Enterprises need to have corresponding transportation qualifications, possess special transportation vehicles and professional technical equipment, and be able to provide professional services and integrated transportation capabilities such as route survey, scheme design, road and bridge reinforcement, obstacle clearance, communication and coordination.

Therefore, large-scale transportation generally refers to the transportation and distribution of large equipment.

Over limit equipment (goods) refers to loading contour dimensions that exceed the vehicle clearance standard; Overweight equipment (cargo) refers to the effect of the total weight of the vehicle on the bridge exceeding the design live load.
Shenzhen Transspeed Logistics is a professional company engaged in the lifting and transportation of large equipment, crawler cranes, large-scale equipment transfer, and engineering machinery transportation. The company has more than 100 special vehicles for four types of oversized items, namely "ultra long, ultra wide, ultra high, and overweight", which can handle the transportation of large equipment ranging from 20T to 200T and equipment ranging from 20 meters to 50 meters. Both of the main transportation vehicles are equipped with GPS satellite positioning and navigation systems, and have a professional team for transporting oversized items.