Many overseas buyers blindly pursue large working radius, believing that larger parameters mean stronger practicality, while ignoring scenario adaptation, resulting in resource waste and low efficiency. Large-radius equipment is inflexible and high fuel-consuming for narrow municipal sites and courtyard renovation; small-radius machines have low efficiency and delay schedules for large earthwork and farmland projects. Working radius directly determines operation coverage, flexibility and condition adaptability. Short-radius and high-flexibility equipment suits small refined scenarios with high precision and low fuel consumption; long-radius and high-efficiency machines adapt to open large-scale scenarios to increase daily output. Selecting equipment according to project scale and working space maximizes cost performance and construction efficiency.