The cargo trolley has low center of gravity and safe operation. It is suitable for the handling of heavy objects and appliances.There are two series of tolley, one is rubber wheel type and the other is steel wheel type. Because the roller made of PU (polyurethane) material is not easy to damage the work site, the steel wheel can be transported on rough ground or field ground. trolley transport can be used alone or together. A single small transport trolley can carry equipment of two to 100 tons, and multiple small transport trolleys can carry large equipment weighing up to 400 to 600 tons. Small transport trolleys are weight transporters, which can replace the rollers used in traditional transport equipment Lifting weight: 4tons,6tons,8tons,9tons,12tons,16tons,20tons,25tons,32tons,40tons just tell me your needs, and contact us.