Qingdao Chary Machinery Co.,Ltd

Concrete has been a fundamental material in construction since ancient times. The Romans were pioneers in using a form of concrete to build their aqueducts, coliseums, and roads, demonstrating early on the material's robustness and versatility.

A semi-truck, often referred to as a tractor-trailer or an articulated lorry, is a powerful vehicle primarily used for transporting large loads over long distances.